Pristine Blue Chlorine Free chemicals. PristineBlue® is a non-chlorine chemical system which provides pool owners with many advantages over chlorine. It’s gentle on eyes and skin, won’t bleach vinyl liners and your family can swim immediately after application. The formula used to make PristineBlue® is EPA registered in every state and is Certified to NSF/ANSI Standard 60 as a drinking water additive. Pool owners can treat their pool water with the same chemical used to control algae and bacteria in many U.S. drinking water supplies.