Reagents for the photometric determination of silver in the range up to 1000 mg / L. PAN method.
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Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb
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Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution
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Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm
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Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution
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Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution
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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.
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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 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU
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HI770 Checker HC ® - Silica, HR 
