Reagents for Freshwater Alkalinity HI 775 Checker HC ®, 25 Tests

The HI 771 Checker®HC is a simple, accurate, and cost effective way to measure ultra-high ranges of chlorine. Designed as a more accurate alternative to chemical test kits, the HI 771 provides quick, accurate results in four easy steps.

Range 0.0 - 99.9 ppm NH3-N | Nessler Method | 0.1ppm resolution

Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm

Range 0.00 - 9.99 ppm NH3-N | Nessler Method | 0.01ppm resolution