Reagents for HI 717 Checker HC ®, 40 Tests

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

The HI 764 Checker®HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the HI 764 Checker®HC, press the button and read the results. It’s that easy.