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น้ำยามาตรฐานสอบเทียบ
1 × ฿2,461.00 -
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HI775 Checker HC ® - Alkalinity in fresh water (dKH)
1 × ฿3,103.00
Subtotal: ฿5,564.00
Calibration checking set for Checker®HC HI 764 Nitrite Ultra Low Range.
(0 and 100 ppb nitrite)
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฿3,103.00
Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution
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฿3,103.00
Range 0.00 - 9.99 ppm NH3-N | Nessler Method | 0.01ppm resolution
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฿3,103.00
Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm
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฿3,103.00
Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution
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฿2,782.00
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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฿3,104.07
Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm
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฿3,103.00
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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฿3,105.14
Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution