Roztwór buforowy pH 7.02 (25°C) (diwodorofosforan potasu/wodorofosforan disodu) w odniesieniu do NIST – SCHARLAU
Additional information
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| Producent: |
POBIERZ KARTĘ PRODUKTU
POBIERZ KARTĘ POZIOMU JAKOŚCI
POBIERZ KARTĘ CHARAKTERYSTYKI PRODUKTU
PRODUCENT: SCHARLAB
Buffer solution pH = 7,02 (20 °C)
– Density: 1,00 g/cm3
– Solub. in water: (20 ºC): miscible
– Melting point: -5 ºC
– Boiling point: 109 ºC
– Tariff number: 3822 00 00 00
– Applications: in buffer solutions.
SPECIFICATIONS
pH at 20 �ºC: 7,02
specification range: 7,01 – 7,03
uncertainty : ± 0,01
Composition per litre is 3,5 g Potassium dihydrogen phosphate and 12,5 g di-Sodium hydrogen phosphate. Contains preservative.
Standard buffer solutions are prepared using gravimetric and volumetric procedures. The batch value is determined by measurement with a combination glass electrode against five-point calibration according to DIN 19268. This pH buffer solution is traceable to Standard Reference Material from NIST.
0: 7,12
5: 7,09
10: 7,06
15: 7,04
20: 7,02
25: 7,00
30: 6,99
35: 6,98
40: 6,97
45: 6,96
50: 6,96
