Reagents for HI 764 Checker HC ®, 25 Tests

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

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

Range 0:00 to 2:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm