Reagents for HI 749 Checker HC ®, 25 Tests

Range 0:00 to 3:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm

Range 0.0 - 99.9 ppm NH3-N | Nessler Method | 0.1ppm 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.

Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm