Micro Essential Lab QC-1001 Plastic Hydrion High Range Quat Check Test Paper Dispenser, Single Roll, Food Service Test Strips, 0 - 1000 ppm (Case of 10) Handy, accurate method for testing sanitizing solutions which have not been built up with strongly alkaline cleansers Calibrated for dimethyl benzyl ammonium chloride and similar quaternaries Reads full range of 0-1000 ppm Clear, distinct color match chart included Paper roll is contained in a plastic dispenser with a serrated edge allowing easy tear off Price For: Each Length: 15&#39; Number of Tests: 100 Testing Parameter: Quaternary Ammonium Range: 0, 200, 400, 600, 800, 1000 ppm Width: 7/32" Type: Single Dispensor, Quaternary Ammonium Item: Test Paper Country of Origin (subject to change): United States