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CHÍNH SÁCH KHÁCH HÀNG
Hydrazine colour matching vessel (1 UNIT)
BOD Standard (analogue EN 1899) Standard Solution 210 ±20mg/l (1 SET)
Colour Reference Solutions R for testing the colour intensity acc. to Ph. Eur. R1-R7 CertiPUR (1 SET)
Colour Reference Solutions B for testing the colour intensity acc. to Ph. Eur. B1-B9 CertiPUR (1 SET)
Potassium chloride solution (nominal 12.8 mS/cm) certified reference material for the measurement of (30 X 30 ML)
Barium sulfate for white standard DIN 5033 (250 G)
Buffer solution (di-sodium tetraborate), traceable to SRM from NIST and PTB pH 9.22 (20°C) CertiPUR (1 L)
Potassium chloride solution (nominal 0.147 mS/cm) certified reference material for the measurement of (30 X 30 ML)
Calcium hydroxide for the preparation of DIN 19266 pH standard buffer solutions, pH : 12.45 (25 G)
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