HI93719-01 Hardness Magnesium – Reagents -100 Tests

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

Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm

The HI 775 Checker®HC is a simple, accurate, and cost effective way to measure alkalinity. Designed as a more accurate alternative to chemical test kits, the HI 775 provides quick, accurate results in four easy steps.