HyperFlex (AFCO 4365) is a phosphate-free peracetic acid/nitric acid-based low pH acid sanitizer developed for use on food, dairy, and beverage processing and filtration equipment. HyperFlex passes the EPA food contact sanitizer test for previously cleaned hard, non-porous food contact surfaces (AOAC Germicidal and Detergent Sanitizing Action of Disinfectants) against Staphylococcus aureus and Escherichia coli when used according to the label directions.