100 PK Plastic Active Chlorine Bleach Test Strip, High Level Up to 2000ppm for Sanitizers and Disinfectants Designed for DAYCARES & Senior Homes

Used for compliance with health department regulation that requires testing concentration of sanitizing & disinfecting solutions MADE IN USA! Vial of 100 test strips, more than competitors! Water resistant read color chart with readings at 0, 25, 50, 200, 500, 800, 1500, 2000 ppm Comes in a moisture wicking vial with built in desiccant and a flip-top lid Detect free chlorine at higher levels with distinct color changes over the entire range for increased accuracy