Reagents for HI 758 Checker HC ®, 25 Tests

Range 0 - 20 ppm | ESPA method | Resolution 0.1ppm

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 0-999 ppb | ASTM Method D1687-92 diphenylcarbonate | Resolution 1 ppb

Range 0:00 to 2:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm