5 boxes Hydrion PH and Sanitizer Test Kit Micro Essential 0.0-13.0 Cat#93 is a reliable and accurate test kit designed for monitoring pH levels and sanitizer effectiveness in various settings such as physical laboratories, veterinary medicine, medical laboratories, microbiological laboratories, biological laboratories, and family medicine. Made by the trusted brand Hydrion in the United States, this kit ensures precise measurements with a wide range of pH levels between 0.0 and 13.0. With an expiration date of 05/2028, this test kit provides essential tools for maintaining proper hygiene and sanitation in laboratory and medical settings.