Silica Low Range Calibration Standard Set
All Product
Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution
All Product
Range 0.0 - 8.0 ppm | DPD method | Resolution 0.1ppm
All Product
The HI 771 Checker®HC is a simple, accurate, and cost effective way to measure ultra-high ranges of chlorine. Designed as a more accurate alternative to chemical test kits, the HI 771 provides quick, accurate results in four easy steps.
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.
All Product
Range 0:00 to 2:00 ppm | EPA method 340.1 | 0.01ppm resolution
All Product
Range 0.00 - 9.99 ppm NH3-N | Nessler Method | 0.01ppm resolution
All Product
Range 0:00 to 3:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm
All Product
Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm
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HI726 Checker HC ® - Nickel, HR 
HI717 Checker HC ® - Phosphate, HR 
