Reagent for the photometric determination of chromium VI in the range up to 300 g / L. Diphenylcarbohydrazid method.
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Range 0.0 - 99.9 ppm NH3-N | Nessler Method | 0.1ppm resolution
All Product
Range 0.0 - 12.5 ppm | DPD Method | Resolution 0.1ppm
All Product
Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution
All Product
The HI 761 uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample.
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Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm
All Product
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.
All Product
Range 0.0 - 8.0 ppm | DPD method | Resolution 0.1ppm
All Product
Range 0 - 600 ppb NO2-N | EPA method 354.1 | Resolution 1 ppb
081-855-1842
02-541-4199
HI713 Checker HC ® - Phosphate, LR 
HI727 Checker HC ® - Color of Water 
