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 ( 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.

Phone: (800) 948-7480

View More