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CHÍNH SÁCH KHÁCH HÀNG
Aquamerck Formaldehyde Range/graduation 0.1-0.25- 0.4-0.6-0.8-1.0-1.5 mg/l HCHO (100 TESTS)
Potassium chloride solution (nominal 111 mS/cm) certified reference material for the measurement of (500 ML)
2-Propanol standard for the analysis of tobacco (2.5 L)
Potassium tetraoxalate dihydrate certified secondary standard reference material for pH measurement; (25 G)
Sodium hydrogen carbonate/sodium carbonate certified secondary standard reference material for pH (2 X 25 G)
Potassium dihydrogen phosphate, di-Sodium hydrogen phosphate certified secondary standard reference (2 X 25 G)
di-Sodium tetraborate decahydrate certified secondary standard reference material for pH measurement; (25 G)
Potassium hydrogen phthalate Volumetric standard, secondary reference material for alkalimetry, traceable (80 G)
Potassium chloride solution (nominal 0.147 mS/cm) certified reference material for the measurement of (500 ML)
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