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Reagents for the photometric determination of calcium. Oxalate method.
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Range 0:00 to 5:00 ppm | EPA Method 315 B | 0.01ppm resolution
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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.
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Range 0 - 600 ppb NO2-N | EPA method 354.1 | Resolution 1 ppb
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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 0.0 - 12.5 ppm | DPD Method | Resolution 0.1ppm
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Range 0.0 - 30.0 ppm | amino acid method | Resolution 0.1ppm
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Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution