Roztwór buforowy pH 4.00 (20 °C) (wodorftalan potasu) w odniesieniu do NIST – SCHARLAU
Additional information
| Wielkość opakowania | |
|---|---|
| Nr katalogowy | |
| Producent: |
POBIERZ KARTĘ PRODUKTU
POBIERZ KARTĘ POZIOMU JAKOŚCI
POBIERZ KARTĘ CHARAKTERYSTYKI PRODUKTU
PRODUCENT: SCHARLAB
Buffer solution pH = 4,00 (20 °C)
– Density: 1,01 g/cm3
– Solub. in water: (20 ºC): miscible
– Tariff number: 3822 00 00 00
– Applications: for calibrating pH-meters, analytical chemistry.
SPECIFICATIONS
pH at 20 �ºC: 4,00
specification range: 3,99 – 4,01
uncertainty : ± 0,01
Composition per litre is 10,2 g Potassium hydrogen phthalate. 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: 4,00
5: 4,00
10: 4,00
15: 4,00
20: 4,00
25: 4,01
30: 4,02
35: 4,03
40: 4,04
45: 4,05
50: 4,06
