Hydrion QT-40 Quaternary Test Paper provides a simple, reliable, and economical means to measure the concentration of Quaternary Sanitizers, particularly muli-quat broad range quaternary ammonium sanitizer solutions. With color matches at 0-150-200-400-500ppm (parts per million), the test paper measures concentrations between 0-500ppm, detecting exhaustion of solutions that should be replaced as well as helping to avoid using excessive amounts of sanitizing agents. Convenient Case: Since the test papers are packaged in a plastic case, they'll have some level of protection from water and other liquids that can cause them damage; However, they should not be stored in humid environments; Also, the case has a serrated edge that makes it easy for users to tear off a strip of the test paper; Additionally, instructions are printed on the case for the user's convenience
