HI93732-01 Dissolved Oxygen – Reagents – 100 Tests

Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU

Range 0:00 to 5:00 ppm | EPA Method 315 B | 0.01ppm resolution

Range 0.00 - 9.99 ppm NH3-N | Nessler Method | 0.01ppm resolution

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.