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CHÍNH SÁCH KHÁCH HÀNG
Microquant Sulfide Range/graduation 0.1-0.3-–0.5-0.7-1- 2-3-4-5 mg/l S (200 TESTS)
Potassium tetraoxalate dihydrate certified secondary standard reference material for pH measurement; (25 G)
Potassium hydrogen tartrate certified secondary standard reference material for pH measurement; (25 G)
Potassium chloride solution (nominal 0.015 mS/cm) certified reference material for the measurement of (5 X 100 ML)
Potassium hydrogen phthalate Volumetric standard, secondary reference material for alkalimetry, traceable (80 G)
Potassium chloride solution (nominal 12.8 mS/cm) certified reference material for the measurement of (500 ML)
Colour Reference Solutions R for testing the colour intensity acc. to Ph. Eur. R1-R7 CertiPUR (1 SET)
Sodium hydrogen carbonate/sodium carbonate certified secondary standard reference material for pH (2 X 25 G)
Colour Reference Solutions Y for testing the colour intensity acc. to Ph. Eur. Y1-Y7 CertiPUR (1 SET)
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