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Reagents for the photometric determination of iron in the range to 5.00 mg / L. Phenanthroline method.
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Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU
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Range 0:00 to 7:00 g / L | Photometric Method | Resolution 0.01g / L
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Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb
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Range 0:00 to 5:00 ppm | EPA Method 315 B | 0.01ppm resolution
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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 3:00 ppm NH3-N | Nessler 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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Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm