Reagent for the photometric determination of chromium VI in the range up to 1000 micrograms / L. Diphenylcarbohydrazid method.
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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 0.00 - 9.99 ppm NH3-N | Nessler Method | 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 - 20 ppm | ESPA method | Resolution 0.1ppm
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Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm
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Range 0.0 - 8.0 ppm | DPD method | Resolution 0.1ppm
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Range 0.0 - 12.5 ppm | DPD Method | Resolution 0.1ppm
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Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU
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ชั้นวางหลอดทดลองระบายความร้อนทำจากสแตนเลสสตีล (HI740216) 
HI70038P - 6.44 g/l (ppt) TDS@25°C - 25x20ml 
HI70080C - 800 mg/l (ppm) TDS@25°C Zert. - 25x20ml 
HI713 Checker HC ® - Phosphate, LR 
