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Reagents for the photometric determination of nitrate in the range of up to 30.0 mg / L. Cadmium reduction method.
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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 0:00 to 2:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm
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Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU
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Range 0.0 - 30.0 ppm | amino acid method | Resolution 0.1ppm
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Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb
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Range 0:00 to 3:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm
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Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm
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Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm