I am having trouble using my discount code

The discount codes are specific to work for certain products.

Below I have provided a guide so you can see if the item you are interested in is eligible for use in a promotion.

• Pennybody Program: You can order a 20µl trial size of an unconjugated item for $0.01 + shipping
  
  
• The Greatest Stain Competition: You can select any 20µl sized item to generate a stain that you would share with Bioss to enter our Staining Competition for and with free shipping.