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CHÍNH SÁCH KHÁCH HÀNG
Ammonium standard solution 2.00 mg/l NH4-N ± 0.07 mg/l (100 ml)
Potassium chloride solution (nominal 1.41 mS/cm) certified reference material for the measurement of (30 X 30 ML)
Potassium chloride solution (nominal 0.147 mS/cm) certified reference material for the measurement of (30 X 30 ML)
Potassium hydrogen tartrate 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)
Colour Reference Solutions R for testing the colour intensity acc. to Ph. Eur. R1-R7 CertiPUR (1 SET)
2-Propanol standard for the analysis of tobacco (2.5 L)
POTASSIUM HYDROGEN PHTHALATE VOLUMETRIC (1 Pc)
Potassium tetraoxalate dihydrate certified secondary standard reference material for pH measurement; (25 G)
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