Reagents for HI 758 Checker HC ®, 25 Tests

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.

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

Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm

Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution