Reagents for the photometric determination of calcium. Oxalate method.
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Range 0.0 - 8.0 ppm | DPD method | Resolution 0.1ppm
The HI 775 Checker®HC is a simple, accurate, and cost effective way to measure alkalinity. Designed as a more accurate alternative to chemical test kits, the HI 775 provides quick, accurate results in four easy steps.
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Range 0.0 - 12.5 ppm | DPD Method | Resolution 0.1ppm
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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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Reagents for HI 755 Checker HC ®, 25 Tests
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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
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Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb
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HI5002 - 2.00 pH@25°C - TQ - 500ml 
HI7035L - EC 111800 µS/cm@25°C - 500ml 
เครื่องควบคุมค่าความนำไฟฟ้า 
HI705 Checker HC ® - Silica, LR 
