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HI723 Checker HC ® - Chromium VI, HR
1 × ฿3,103.00
Subtotal: ฿3,103.00
Calibration Standard for HI 701 Checker HC ®
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Range 0-999 ppb | ASTM Method D1687-92 diphenylcarbonate | Resolution 1 ppb
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Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU
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Range 0:00 to 5:00 ppm | EPA Method 315 B | 0.01ppm resolution
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Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution
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Range 0:00 to 3:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm
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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.