Insta-TEST® PRO Low Range Phosphate Test Strips. The Insta-TEST® PRO Phosphate High Range pool and spa test strip measures Phosphate levels from 3, ppb, 6, ppb, and 12, ppb. The Insta-TEST 3 Plus pool & spa strip measures Free Chlorine ppm, Bromine ppm, Total.
The Insta-Test Low Range Chlorine test strips are a convenient way to test low range levels of Free Chlorine. Ideal for drinking water or pools. Range and.
erdves.info: Lamotte Insta-test 5 Pool & Spa Test Strips (): Swimming Pool Testing Strips: Garden & Outdoor.