HI93732-01 Dissolved Oxygen – Reagents – 100 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 - 8.0 ppm | DPD method | Resolution 0.1ppm

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

Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution