Calibration Standard HI 700 Checker HC ®

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 - 150 ppm | ferrous sulfate method | Resolution 1ppm

Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution

Range 0:00 to 7:00 g / L | Photometric Method | Resolution 0.01g / L