Reagents for the photometric determination of silver in the range up to 1000 mg / L. PAN method.
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Range 0:00 to 2:50 ppm | ascorbic acid method | Resolution 0.01ppm
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Range: 0 to 300 ppb. The HI 749 Checker®HC is a simple, accurate, and cost effective way to measure low ranges of chromium VI in fresh water. Designed as a more accurate alternative to chemical test kits, the HI 749 provides quick, accurate results in four easy steps. The HI 749 uses an adaptation of the ASTM Manual of Water and Environmental Technology, D1687-92, Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent causes a purple tint in the sample.
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 0.00 - 9.99 ppm NH3-N | Nessler Method | 0.01ppm resolution
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Range 0.0 - 12.5 ppm | DPD Method | Resolution 0.1ppm
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Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm
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Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU
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Range 0:00 to 2:00 ppm | EPA method 340.1 | 0.01ppm resolution
081-855-1842
02-541-4199
HI98128 pH/°C-Tester (0.01 pH resolution) - waterproof 
เครื่องวัดปริมาณฟอสเฟต ช่วงสูง รุ่น HI717 
HI764 Checker HC ® - Nitrite, ULR 
