MHK masterbatch colors are pure, uniform and consistent. The product meets the standard of QB 2357-1998 polyester (PET) non steam beverage bottle, QBT 1868-2004 standard for polyethylene terephthalate (PET) carbonated beverage bottles, QBT 2665-2004 standard for polyethylene terephthalate (PET) bottles for hot filling; The product has FDA certification.