The buyer must be certified by the EPA. - The buyer must show proof of certification before paying and before the item can be shipped Non-EPA approved refrigerants aren't allowed on eBay due to health and safety reasons. The Federal Clean Air Act restricts the sale and use of CFC and HCFC refrigerants to technicians certified by an EPA-approved testing organization. THIS PRODUCT IS SHIPPED IN COMPLIANCE WITH FEDERAL HAZMAT REGULATIONS. THIS MEANS YOUR PRODUCT WILL BE CORRECTLY HANDLED BY THE CARRIER.