FAQ

  • Contact Us
  • When and how can I contact the Customer Service Department for assistance?

    The Customer Service Department is available Monday through Friday, 8:00am to 5:00pm PST. For immediate concerns or assistance please call the Customer Service Department to speak with a representative directly. We are here to help and can be reached by phone, email or through Live Chat. 

    ​Live Chat is a helpful tool for discussing the product and asking general questions, but remember, a Customer Service Representative is only available to chat Monday through Friday, 8:00am to 5:00pm PST. 

    Emailing info@grencoscience is a great way to seek out assistance. You will receive a timely response from a representative ready to help! 


    Note: The Customer Service Department is closed during weekends, and most national holidays. 


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Counterfeit
  • How can I tell if my product is inauthentic / counterfeit?
    Grenco Science prides itself on offering the highest quality products and customer service available. As much as the company would like to help the victims of counterfeiting, we're not able to provide assistance for those who have purchased one of these inauthentic items. 

    What to look for:

    1. Pricing: Grenco Science and its wide list of authorized retailers offer our products for the sale value listed on our website (www.grencoscience.com). If the product you're looking to purchase is normally $99.95 and you've found this item for $49.95, that is a red flag. All authorized retailers will sell our products for no less than the price listed on our website.
    2. UPC Code: The majority of Grenco Science products will have a bar code with a UPC Code on the back. If the box in which your product came in doesn't have this, please call the Customer Service line to discuss the authenticity of the purchase.
    3. Pen(s) wrapped inside of the box: If you notice that the pen(s) are wrapped individually in cellophane INSIDE of the box, then the product is probably inauthentic.
    4. LED light: Unless you have an Artist or Charity Series product that displays a different LED light than the standard blue (for example: the Huf Original microG has a green LED light and the Claw Money Original microG has a pink LED light) the product is counterfeit. 

    These are the main points to look for, but if you'd like to discuss the matter in further detail, please contact the Customer Service Department directly.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Counterfeit Disclaimer

    Counterfeits

    Grenco Science is victim to product counterfeits available for purchase across the Web and in stores. These unauthorized replicas are not engineered to the quality standards upheld by Grenco Science and any purchase thereof will not be covered under Grenco Science’s one-year warranty (electrical components), under any circumstance. Do not purchase from eBay, Rakuten, Amazon or any other third-party website. To ensure optimum product quality, safety, and service, always purchase from www.grencoscience.com or contact the Customer Service Department, Monday through Friday 8:00am to 5:00pm PST, to find an authorized retailer near you. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
     

  • G Merchandise
  • G Merchandise

    Per our Terms and Conditions, all G Merchandise sales are final. Please inspect merchandise upon arrival for any imperfections, as we can still offer replacements for damaged or defective items if contacted within 7 business days after the product's delivery.

    If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • G Pen Battery
  • Cleaning
    Keeping the G Pen Battery clean helps the overall performance and longevity of the product. 

    Remove any unwanted concentrate residue from the power button and connection point with a G Tip or Q-Tip soaked in rubbing alcohol. Keeping these areas clean will ensure that the connections remain established and the battery functions at a high level. 


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • G Pen Battery Warranty
    We offer a 1-year warranty on all electronic items (not including Tank / Coil systems). If you're experiencing an issue with the G Pen Battery, please contact Customer Service for information on how to get the item replaced. In order to qualify, you must have purchased from our website directly or have a valid receipt to show the date of purchase and the store in which it was purchased from. We do not assist with counterfeit products or any items purchased from third-party websites as most of the counterfeit items are distributed through those channels.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.


    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I know if my G Pen Battery needs to be charged?
    When the G Pen Battery is in need of a charge, the power button will flash 8 times when pressed.

    At this time, connect the G Pen Battery to the G Pen Wired USB G Charger. The G Pen Wired USB G Charger can be connected to either the G Wall Adapter or any compatible USB port. The G Pen Wired USB G Charger will initially show a green light, and then turn red to show that a charge is being administered to the G Pen Battery.

    Once the red LED light changes back to green, the G Pen Battery has been fully charged.

    If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • G Pen Coil
  • Will I need to replace my G Pen Coil?
    The G Pen Coil has a durability index of approximately 6-8 weeks per average user. The G Pen Coil can be purchased a la carte for $19.95. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Compatibility
    • The G Pen Coil is compatible for use with the G Pen Battery.
    • The G Pen Coil is designed for use with concentrates. 
    • The G Pen Coil is not intended for use with ground material. 
    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST .

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • G Pen Elite Vaporizer For Ground Material
  • How do I change my G Pen Elite Between Fahrenheit and Celsius

    For Celsius, simultaneously hold down front panel button and upper side button.

    For Fahrenheit, simultaneously hold down front panel button and lower side button.

     

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How do I know when to charge the G Pen Elite?

    When the battery life indicator bars flash four times, it’s time to re-charge.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • What are the specs of the internal battery?

    Rechargeable 2200mAh / 7.77Wh, 3.7-4.0V lithium-ion battery.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • I can turn the device/LED display on, but the temperature doesn’t seem to go up. How do I get the chamber to start heating?
    Hold the front panel button for one second and release to engage heat-up.
  • How long can my G Pen Elite perform on a full charge?

    On a full charge, the G Pen Elite can last 12-15 maximum activations (five-minute heating periods).

     

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How do I know when the G Pen Elite is fully charged?

    All four battery life indicator bars will be illuminated.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.


    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • What is the best way to clean and maintain the G Pen Elite Mouthpiece?

    Always clean immediately after every use. The cleaning brush should be used to brush off residual material around the connection of the mouthpiece and over the filter screen.  Pre-heating the device before cleaning will make it easier to brush off any ground material residue.  If there is significant build-up, separate all three pieces of the Elite’s mouthpiece and soak in rubbing alcohol.  Running the entire mouthpiece under hot water can also be effective.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How much ground material can fit inside the heating chamber?

    Without packing the chamber too tightly, the chamber can fit anywhere between 0.25 - 0.75 grams of dried material.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • What is the volume of the heating chamber?

    0.11 cubic inches, or 17.35 x 16.28 x 7.56 mm.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Can the G Pen Elite for Ground Material take concentrates?

    We do not recommend it, as any leakage through the airflow holes at the bottom of the chamber can permanently damage the internal components of your device and this will not be covered under warranty.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • What’s the best temperature setting to use for vaporizing ground material?

    To get the best and most long-lasting flavor out of your preferred ground material, we recommend setting the temperature around 375°F, or 190°C.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How do I remove the filter screen from the G Pen Elite mouthpiece?

    Make sure to fully clean the mouthpiece before removing the filter screen.  Use the G Pen Tool included to push against the filter holes of the screen, sliding it out of the small opening at the front of the mouthpiece.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How should I ground my preferred dried material?

    Always use a grinder, or G card, to grind up dried material.  For best results, make sure your dried herbs are finely ground.  Larger grounds will take longer to vaporize and yield less vapor.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • What are the materials used in the device?

    Aluminum-alloy oxygenation panel, ceramic, silicone rubber, stainless steel, and BPA-free food-grade plastic (polybutylene terephthalate).

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • What are the dimensions of the device?

    112.2 x 31.6 x 25.7 mm


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How do I remove the mouthpiece?

    Press firmly upward on back of mouthpiece then lift one side upward to remove. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Is my G Pen Elite covered under warranty?
    Grenco Science warrants the G Pen Elite against defects in materials and workmanship under normal use for a period of one (1) year from the date of retail purchase by the original end-user purchaser. If a physical defect arises and a claim is received within the Warranty Period, Grenco Science will exchange the defective product with a new product.  The Limited Warranty does not apply to normal performance degradation of batteries or neglecting to adhere to cleaning/loading instructions.
  • Are replacement mouthpieces available for sale?

    Full replacement mouthpieces (Mouthpiece, silicone rubber covering, filter screen) and mouthpiece filter screen packs are available for sale from GPEN.COM soon.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Is it necessary to register my product? How do I do this?

    Yes, registering your product will ensure that a warranty replacement is processed smoothly and efficiently via our Customer Service department, should you experience any operational defects in the Elite they are unable to solve for you over the phone or via e-mail.  Most importantly, you will be the first to hear of any important product updates related to your purchase of a G Pen Elite for Ground Material.  Go to GPen.com/Register your S/N, which can be found on the label at the bottom of the packaging.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • G Pen Ground Material
  • Will I need to replace my G Pen Ground Material Tank?
    The G Pen Ground Material Tank has a durability index of approximately six weeks per average user. The G Pen Ground Material Tank can be purchased a la carte. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I use my G Pen Ground Material?
    Once you’ve loaded your G Pen Ground Material Tank, threaded it onto your G Pen Battery, and unlocked it by pressing the button five times, simply hold down the button to heat the coil and draw.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I load my material into the G Pen Ground Material Tank?
    To load your G Pen Ground Material Tank, you first need to unscrew the mouthpiece to reveal the heating chamber. Grind your dried blends to a desired consistency, and load the desired amount into the tank. Keep in mind that the airflow through the tank greatly depends on the amount and consistency of the dried blends loaded. Once you’ve loaded your dried blends and screwed your mouthpiece back on, your G Pen Ground Material Tank is ready to be used.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Compatibility
    • The G Pen Ground Material Tank is compatible for use with the G Pen Battery.
    • The G Pen Ground Material Tank is designed for use with Dried, Aromatic Material. 
    • The G Pen Ground Material Tank is not intended for use with Concentrates. 
    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • My mouthpiece seems to be clogged; how should I clean it?
    For basic cleaning, we recommend using our G Cleaning Tips, which come filled with a cleaning solution. If deeper cleaning is required, you can also use your G Tool to remove more solid residue. For the deepest cleaning, you can soak your mouthpiece in isopropyl alcohol for about 20-30 minutes, followed by thoroughly rinsing it with hot water. This should loosen and dislodge even the toughest built up residue.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • What is the best way to clean the inside of my G Pen Ground Material Tank?
    Within the heating chamber of your G Pen Ground Material Tank, the coil itself works to clean itself by clearing off any residue that comes in contact with it. We don’t recommend using any type of liquid cleaning agent in the G Pen Ground Material Tank, as doing so could cause it to malfunction. You can use the included cleaning brush and G Tool to remove residue from the area around the coil itself and the surrounding glass sleeve, but be very careful not to be too rough with the coil itself, as too much force applied can damage it.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I know if my G Pen Battery needs to be charged?
    When the G Pen Battery is in need of a charge, the power button will flash 8 times when pressed.

    At this time, connect the G Pen Battery to the G Pen Wired USB G Charger. The G Pen Wired USB G Charger can be connected to either the G Wall Adapter or any compatible USB port. The G Pen Wired USB G Charger will initially show a green light, and then turn red to show that a charge is being administered to the G Pen Battery.

    Once the red LED light changes back to green, the G Pen Battery has been fully charged.

    If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options. 

    If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I turn my G Pen Ground Material on / off?
    To turn your G Pen Ground Material on, click the button five times in rapid succession. If done correctly, your G Pen Battery will blink three times to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your G Pen Ground Material off, click the button five times again. The G Pen Battery will again blink three times, but will not light up when the button is pressed. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • G Pen Hookah Vaporizer
  • How do I load my Liquids into the G Pen Hookah Tank?

    The G Pen Hookah Tank is comprised of an Atomizer, Base, and Encasement. While the G Pen Battery is off (locked), unscrew the Base from the Encasement. Ensure the Atomizer is securely threaded into the top of the Base before proceeding to load. Invert the Encasement and fill the perimeter of the enclosed tank using the provided liquid Container. Don’t load liquid into the central pipeline of the Encasement, or fill it beyond half capacity. With the Atomizer attached to the Base, screw the Base back onto the Encasement, effectively sealing the tank. Once the entire Hookah Tank is screwed onto the G Pen Battery, it is ready for use.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How do I clean my Hookah Tank?
    To clean the G Pen Hookah Tank, first remove the Atomizer and Base from the Encasement. It is very important that these parts do not get wet. With the base and atomizer removed, simply rinse the Encasement with warm water and allow it to fully dry before refilling.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I use my G Pen Hookah Vaporizer?
    Once you’ve loaded your G Pen Hookah Tank, threaded it onto your G Pen Battery, and unlocked it by pressing the button five times, simply hold down the button to heat the coil and inhale.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I know if my G Pen Battery needs to be charged?

    When the G Pen Battery is in need of a charge, the power button will flash 8 times as an indication of this.

    At this time, connect the G Pen Battery to the G Pen Wired USB G Charger. The G Pen Wired USB G Charger can be connected to either the G Wall Adapter or any compatible USB port. The G Pen Wired USB G Charger will initially show a green light, and then turn red to show that a charge is being administered to the G Pen Battery.

    Once the red LED light changes back to green, the G Pen Battery has been fully charged.

    If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options. 

    If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • How do I turn my G Pen Hookah Vaporizer on/off?

    To turn G Pen Hookah Vaporizer on, click the button five times in rapid succession. If done correctly, your G Pen Battery will blink three times to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your G Pen Hookah Vaporizer off, click the button five times again. The G Pen Battery will again blink three times, but will not light up when the button is pressed. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • G Pen Vaporizer
  • Why does my G Pen Vaporizer blink five times and stop heating when I am holding the button down?
    The G Pen Vaporizer has an auto-off feature to prevent it from overheating. After your button is held down for an extended period of time, it will shut itself off. We recommend allowing at least 20 seconds to pass between each use to maximize the life of your G Pen.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I use my G Pen Vaporizer?
    Once you’ve loaded your G Pen Coil, threaded it onto your G Pen Battery, and unlocked it by pressing the button five times, simply hold down the button to heat the coil and draw.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I load my Concentrates into the G Pen Coil?
    To load your G Pen Coil, you first need to unscrew the mouthpiece to reveal the heating coil. Using your G Tool, place your desired concentrates in the tank, on and around the coil. Be careful not to be too forceful with the coil itself, as it is delicate and can be dislodged with too much pressure. Once you’ve loaded your desired concentrates and screwed your mouthpiece back on, your G Pen Vaporizer is ready to be used.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • I just got my G Pen Vaporizer; do I need to charge the G Pen Battery before I use it?
    While your G Pen Battery will have some charge out of the box and can definitely be used, we recommend fully charging it for the first few uses to condition it for peak performance

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I charge my G Pen?
    To charge your G Pen Battery, first remove any tank that may be attached to it. Once your USB G Cord is plugged into the G Wall Adapter, it should show a green light. When you screw your battery onto the charger, the battery will blink three times and remain glowing. The light on the charger will also change from green to red, showing that the battery is charging. When that light turns back to green, the battery is fully charged.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • What does it mean when my G Pen Battery flashes 3 times?

    A G Pen Battery flashing 3 times typically indicates a problem in communication between the G Pen Battery and the G Pen Coil. To fix this, make sure that the connection between the two is clean and secure. If you are still seeing 3 flashes, you can try your battery with other tanks/coils to see if it will solve the problem. If changing tanks/coils stops the flashing, you may need to replace the problem tank/coil. If the battery blinks 3 times with every tank/coil, the issue lies with the G Pen Battery itself. Contact customer service for replacement under our one year warranty.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • G Slim
  • G Slim Hookah Vaporizer™

    The G Slim Hookah Vaporizer comes standard with the G Slim Battery, G Slim Hookah Tank, and G Slim Wireless USB Charger.

    Directions for use:

    1. Press button five times to turn on/off.

    2. Unscrew tank from battery entirely.

    3. Unscrew atomizer base from tank to expose both atomizer and tank.

    4. Load desired liquids into tank and reattach the atomizer base.

    5. Screw tank setup back onto the battery.

    6. Press and hold button to heat the atomizer, and draw.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • G Slim Ground Material - Rechargeable

    The G Slim Ground Material comes standard with the G Slim Battery, G Slim Ground Material Tank, G Slim Tool and G Slim Wireless USB Charger. 

    Directions for use: 

    1. Press button five times to turn on/off.

    2. Unscrew mouthpiece.

    3. Grind dried material and load into top of heating chamber. 

    4. Screw mouthpiece back on.

    5. Press and hold button to heat coil and draw.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

     

  • G Slim Vaporizer™ - Rechargeable


    The G Slim Vaporizer comes standard with the G Slim Battery, G Slim Tank, G Slim Tool and G Slim Wireless USB Charger. 

    Directions for use: 

    1. Press button five times to turn on/off.

    2. Unscrew mouthpiece.

    3. Load desired concentrates into the heating chamber. 

    4. Screw mouthpiece back on.

    5. Press and hold button to heat coil and draw.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Original microG
  • Cleaning
    It is important to keep the Original microG Coil clean. If you see unwanted concentrate residue collecting on the outside of the cylinder, around the base or the connection points, simply remove it with a G Tip or a Q-Tip soaked in rubbing alcohol. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Compatibility
    • The Original microG Coil is designed for use with the Original microG Battery.
    • The Original microG Coil cannot be attached to the newly designed, threaded microG Battery.
    • The Original microG Coil is designed for use with thicker viscosity concentrates.
    • The Original microG Coil is not intended for use with ground material.
    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Why doesn't my Original microG Coil come with a screen?
    Due to an overwhelming amount of customer feedback, we decided to remove the screen from the Original microG Coil. We are constantly trying to update and improve our products and the customers voice is the most important tool in doing so. The consensus was that the screen limited the functionality of the product as a whole. If you have an Original microG that did come with screens in the coils, there is a very good chance you've received a counterfeit unit.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I know if my Original microG Battery needs to be charged?
    When the Original microG Battery is in need of a charge, the power button will flash 8 times when pressed.

    At this time, connect the Original microG Battery to the Original microG Wired USB Charger. The O
    riginal microG Wired USB Charger can be connected to either the G Wall Adapter or any compatible USB port. The bottom of the Original microG Battery will display a red light to show that a charge is being administered.

    Once the red LED light turns off, the Original microG Battery has been fully charged.

    If the light on your Original microG Battery remains on, and the button continues to flash 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I turn my Original microG on / off?
    To turn the Original microG on, click the button five times in rapid succession. If done correctly, your Original microG Battery will blink two times to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your Original microG off, click the button five times again. The Original microG Battery will again blink two times, but will not light up when the button is pressed. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Original microG Battery Warranty
    We offer a 1-year warranty on all electronic items (not including tank/coil systems). If you're experiencing an issue with the Original microG Battery, please contact Customer Service for information on how to get the item replaced. In order to qualify, you must have purchased from our website directly or have a valid receipt to show the date of purchase and the store in which it was purchased from. We do not assist with counterfeit products or any items purchased from third-party websites as most of the counterfeit items are distributed through those channels.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Will I need to replace my Original microG Coil?
    The Original microG Coil has a durability index of approximately 6-8 weeks per average user. The Original microG Coil can be purchased a la carte for $14.95. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Do I need to clean my Original microG Pen?
    YES.

    The best way to ensure optimum performance/longevity with your Grenco Science Product (microG Pen) is to perform simple cleaning procedures on a regular basis. The most important process lies in the removal of any excess concentrate residue from the connection point of the battery. To be more specific, when referencing the connection point, we mean to describe the part of the battery that is exposed once the coil has been removed. Simply take a Q-Tip, soak it in isopropyl rubbing alcohol, and gently wipe away any of the excess concentrate residue that may have collected there over time. With the microG Pen, it is also important to remove any excess concentrate residue from around the base of the titanium cylinder, on the outer part of the coil. If you notice this excess concentrate residue collecting anywhere, simply engage in this process two to three times a week. It will effectively prevent any disestablished connections between the battery and the coil while keeping the mouthpiece sanitary.  

    Do not soak any of your components (microG Coil, microG Battery, Charger) in any type of cleaning solution or rubbing alcohol. This could compromise the pieces.

    Do not clean the inside of the coil, the area where the heating element lies. The heating element will essentially clean the inside of the coil by clearing away any of the excess concentrate residue.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • What does it mean when my Original microG Battery flashes 3 times?

    An Original microG Battery flashing 3 times typically indicates a problem in communication between the Original microG Battery and the microG coil. To fix this, make sure that the connection between the two is clean and secure. If you are still seeing 3 flashes, you can try your Original microG Battery with other microG Coils to see if it will solve the problem. If changing microG Coils stops the flashing, you may need to replace the problem microG Coil. If the Original microG Battery blinks 3 times with every microG Coil, the issue lies with the Original microG Battery itself. Contact Customer Service for replacement under our one year warranty.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: 
    info@grencoscience.com
    Phone: (800) 948-7480
  • Original microG Battery
  • Original microG Battery Warranty
    We offer a 1-year warranty on all electronic items (not including tank/coil systems). If you're experiencing an issue with the Original microG Battery, please contact Customer Service for information on how to get the item replaced. In order to qualify, you must have purchased from our website directly or have a valid receipt to show the date of purchase and the store in which it was purchased from. We do not assist with counterfeit products or any items purchased from third-party websites as most of the counterfeit items are distributed through those channels.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Original microG Coil
  • Will I need to replace my Original microG Coil?
    The Original microG Coil has a durability index of approximately 6-8 weeks per average user. The Original microG Coil can be purchased a la carte for $14.95. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Shipping
  • Backordered Items

    Back ordered items are usually replenished in 2-3 weeks.

    If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Is there anything I need to know when shipping internationally?
    YES.

    All international shipments are subject to fees when crossing borders. Generally, Customs will implement taxation and brokerage fees that vary based on where the package is being shipped to, how far it has to travel outside US territory, along with the value and weight of the package. It is common for these fees to be applied for any international shipments. We are doing our best to try and establish a uniform brokerage fee for all international packages. The taxation is determined by Customs and cannot be tampered with. Any taxes or fees applied to the shipment are the responsibility of the buyer.

    Please be advised that these fees are normal and are often times applied to international shipments. 


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How long will it take for my order to ship?

    Please allow 24-48 hours for all orders to be processed/shipped. The customer may choose between different shipping methods based on how quickly they prefer the package be delivered. We feature FedEx and USPS as our primary courier services. All delivery times presented at checkout are estimates provided by the couriers and are not guaranteed.  

    Keep in mind that all orders placed during non-business hours, including weekends, evenings and holidays, will not be processed until regular business hours have resumed. Our shipping cut-off time is 2:30 PM EST. 

    If a customer selects an expedited method of shipping, such as FedEx Priority Overnight, remember that 24-48 hours of processing is the standard. One may call the Customer Service Department to ensure that an order placed on a regular business day, goes out that same day, otherwise there is no guarantee. 

    If selecting USPS for shipping, keep in mind that their transit times are not guaranteed, meaning Priority 2 Day may take as much as 4 business days for delivery with no recourse from USPS. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • Warranty
  • Is my Tank / Coil under warranty?
    Our warranty only applies to electronic parts (batteries & chargers). All of our tanks and coils are consumable, meaning they will need to be replaced once in a while. Each tank/coil has a specific durability index. 

    If you have any problems with your tanks/coils within 7 days of the date you received them, please contact us immediately at info@grencoscience or (800) 948-7480 in order for us to assist you accordingly.


    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Is my Grenco Science product covered under warranty?

    All Grenco Science, electronics (battery + charger) are automatically covered under a one-year Warranty. This is a service that Grenco Science provides for all of its customers. One does not need to purchase anything in order to receive this feature. If you are having trouble with either your G Pen Battery or G Pen Charger, please contact the customer service department either by email or phone. The staff is available Monday through Friday from 9:00am to 5:00pm, Pacific Standard Time.  

    Please keep in mind, a warranty system is one that requires a copy of a receipt or proof of purchase. We are always happy to provide assistance, even to those without this documentation, but providing a receipt enables a Customer Service representative to help in a more efficient way.

    Without the receipt one will be subjected to a nominal fee in regard to warranty replacements.  

    Unused tanks can be returned for store credit within the 7-day period after ship date.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480

  • microG Battery
  • microG Battery Warranty
    We offer a 1-year warranty on all electronic items (not including Tank / Coil systems). If you're experiencing an issue with the microG Battery, please contact Customer Service for information on how to get the item replaced. In order to qualify, you must have purchased from our website directly or have a valid receipt to show the date of purchase and the store in which it was purchased from. We do not assist with counterfeit products or any items purchased from third-party websites as most of the counterfeit items are distributed through those channels.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I know if my microG Battery needs to be charged?
    When the microG Battery is in need of a charge, the power button will flash 8 times when pressed.

    At this time, connect the microG Battery to the microG USB Charger. The microG USB Charger can be connected to either the G Wall Adapter or any compatible USB port. The bottom of the microG Battery will initially show a green light, and then turn red to show that a charge is being administered.

    Once the red LED light changes back to green, the microG Battery has been fully charged.

    If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • microG Ground Material
  • Compatibility
    • The microG Ground Material Tank is designed for use with the newly designed, threaded microG Battery.
    • The microG Ground Material Tank cannot be attached to the Original microG Battery.
    • The microG Ground Material Tank is designed for use with dried aromatic blends. 
    • The microG Ground Material Tank is not intended for use with solid concentrates or liquids. 
    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I clean the top of my microG Ground Material Tank?
    If the top of your microG Ground Material Tank becomes clogged, you can soak it in isopropyl alcohol for 20-30 minutes, followed by thoroughly rinsing it with hot water. This should loosen and dislodge and residue built up on this part. For very deep cleaning, you can remove the small screen at the top and use your G Tool to rid the area of heavy residue.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I load my aromatic blends into the microG Ground Material Tank?
    To load your microG Ground Material Tank, you first need to remove the mouthpiece and unscrew the top of the tank to reveal the heating chamber. Grind your material to a desired consistency, and load the desired amount into the tank. Keep in mind that the airflow through the tank greatly depends on the amount and consistency of the ground material loaded. Once you’ve loaded your material, screwed on the top of the tank, and placed your mouthpiece back on, your microG Ground Material Tank is ready to be used.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • What does it mean when my microG Battery flashes 3 times?

    microG Battery flashing 3 times typically indicates a problem in communication between the microG Battery and the microG Ground Material Tank. To fix this, make sure that the connection between the two is clean and secure. If you are still seeing 3 flashes, you can try your battery with other tanks/coils to see if it will solve the problem. If changing tanks/coils stops the flashing, you may need to replace the problem tank/coil. If the battery blinks 3 times with every tank/coil, the issue lies with the microG Battery itself. Contact customer service for replacement under our one year warranty.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I charge my microG Ground Material?
    To charge your microG Battery, first remove any tank that may be attached to it. Once your microG USB Charger is plugged into the G Wall Adapter and battery, the light on the bottom of the battery will turn red, indicating that it is charging. When that light turns back to green, the battery is fully charged.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Will I need to replace my microG Ground Material Tank?
    The microG Ground Material Tank has a durability index of approximately 6-8 weeks per average user. The microG Ground Material Tank can be purchased a la carte for $11.95. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • microG Vaporizer
  • How do I charge my microG Vaporizer?
    To charge your microG Battery, first remove any tank that may be attached to it. Once your microG USB Charger is plugged into the G Wall Adapter and battery, the light on the bottom of the battery will turn red, indicating that it is charging. When that light turns back to green, the battery is fully charged.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • What does it mean when my microG Battery flashes 3 times?

    microG Battery flashing 3 times typically indicates a problem in communication between the microG Battery and the microG Tank. To fix this, make sure that the connection between the two is clean and secure. If you are still seeing 3 flashes, you can try your battery with other tanks/coils to see if it will solve the problem. If changing tanks/coils stops the flashing, you may need to replace the problem tank/coil. If the battery blinks 3 times with every tank/coil, the issue lies with the microG Battery itself. Contact customer service for replacement under our one year warranty.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I turn my microG Vaporizer on/off?
    To turn your microG Vaporizer on, click the button five times in rapid succession. If done correctly, your microG Battery will blink twice to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your microG Vaporizer off, click the button five times again. The microG Battery will again blink twice, but will not light up when the button is pressed. 

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • My mouthpiece seems to be clogged; how should I clean it?
    For basic cleaning, we recommend using our G Cleaning Tips, which come filled with a cleaning solution. If deeper cleaning is required, you can also use your G Tool to remove more solid residue. For the deepest cleaning, you can soak your mouthpiece in isopropyl alcohol for about 20-30 minutes, followed by thoroughly rinsing it with hot water. This should loosen and dislodge even the toughest built up residue.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • Can my microG Vaporizer also be used with Ground Material?
    While the microG Vaporizer comes set up to be used with concentrates, there are definitely parts available to adapt it for use with dried material. All you would need to do so would be a microG Ground Material Tank, which screws onto the microG Battery just like the microG Tank included with the set. 

    If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • What is the best way to clean the inside of my microG Tank?
    Within the actual tank of your microG Tank, the coil works to clean itself by burning off any residue that comes in contact with it. We don’t recommend using any type of liquid cleaning agent in the microG Tank, as doing so could cause it to malfunction. If you need to remove concentrate from the tank, you can do so using your G Tool.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
  • How do I load my concentrates into the microG Tank?
    To load your microG Tank, you first need to remove the mouthpiece to reveal the heating coil. Using your G Tool, place your desired concentrate in the tank, on and around the coil. Be careful not to be too forceful with the coil itself, as it is delicate and can be dislodged with too much pressure. Once you’ve loaded your desired concentrates and replaced your mouthpiece, your microG Vaporizer is ready to be used.

    If you have any further questions please contact our Customer Service Department, which is available Monday through Friday, 8:00am to 5:00pm PST.

    Email: info@grencoscience.com
    Phone: (800) 948-7480
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