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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 hydrogen phthalate certified secondary standard reference material for pH measurement; (25 G)
Barium sulfate for white standard DIN 5033 (250 G)
Sodium hydrogen carbonate/sodium carbonate certified secondary standard reference material for pH (2 X 25 G)
Certificate of analysis available on internet. Conductivity water (nominal 0 mS/cm) Test solution for Measurement (5 X 100 ML)
Potassium hydrogen tartrate certified secondary standard reference material for pH measurement; (25 G)
Potassium chloride solution (nominal 111 mS/cm) certified reference material for the measurement of (500 ML)
Potassium chloride solution (nominal 12.8 mS/cm) certified reference material for the measurement of (30 X 30 ML)
Potassium tetraoxalate dihydrate certified secondary standard reference material for pH measurement; (25 G)
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