Roztwór buforowy pH 12.00 (20°C) (wodorofosforan di-sodu / wodorotlenek sodu ) w odniesieniu do NIST – SCHARLAU
Additional information
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POBIERZ KARTĘ PRODUKTU
POBIERZ KARTĘ POZIOMU JAKOŚCI
POBIERZ KARTĘ CHARAKTERYSTYKI PRODUKTU
PRODUCENT: SCHARLAB
Buffer solution pH = 12,00 (20 °C)
– Density: ~ 1,01 g/cm3
– Solub. in water: (20 ºC): miscible
– Tariff number: 3822 00 00 00
– Applications: analytical chemistry, to fit pH of the reaction media.
SPECIFICATIONS
pH at 20 �ºC: 12,00
specification range: 11,98 – 12,02
uncertainty : ± 0,01
Composition per litre is 10,6 g di-Sodium hydrogen phosphate and 3,10 g Sodium hydroxide.
Standard buffer solutions are prepared using gravimetric and volumetric procedures. The batch value is determined by measurement with a combination glass electrode against two-point calibration according to DIN 19268. This pH buffer solution is traceable to Standard Reference Material from NIST.
0: 12,58
5: 12,41
10: 12,26
15: 12,10
20: 12,00
25: 11,88
30: 11,72
35: 11,67
40: 11,54
45: 11,41
50: 11,33
