HI93700-01 Ammonia LR – Reagents – 100 Tests

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

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

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.