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Reagents for the photometric determination of calcium. Oxalate method.
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Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution
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Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution
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Reagents for HI 755 Checker HC ®, 25 Tests
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Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution
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Range 0:00 to 2:50 ppm | ascorbic acid method | Resolution 0.01ppm
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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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Range 0 - 600 ppb NO2-N | EPA method 354.1 | Resolution 1 ppb
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Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb