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×
HI739 Checker HC ® - Fluoride. HR
1 × ฿3,103.00 -
×
HI723 Checker HC ® - Chromium VI, HR
1 × ฿3,103.00
Subtotal: ฿6,206.00
Calibration Standard for HI 736 Checker HC ®
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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.