Roztwór buforowy pH 9.00 (20°C) (kwas borowy/chlorek potasu/wodorotlenek sodu) w odniesieniu do NIST – SCHARLAU

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Roztwór buforowy pH 9.00 (20°C) (kwas borowy/chlorek potasu/wodorotlenek sodu) w odniesieniu do NIST
Buffer solution pH = 9,00 (20 °C)

STANDARDS, PH BUFFER SOLUTIONS / ROZTWORY BUFOROWE pH,

PRODUCENT: SCHARLAB
Firma SylChem to Autoryzowany Dystrybutor Scharlau

– Density: ~ 1,00 g/cm3
– Solub. in water: (20 ºC): miscible
– Tariff number: 3822 00 00 00
– Applications: in buffer solutions.

SPECIFICATIONS
pH at 20 �ºC: 9,00
specification range: 8,99 – 9,01
uncertainty : ± 0,01
Composition per litre is 3,1g Boric Acid, 3,8g Potassium chloride and 0,8g 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 five-point calibration according to DIN 19268. This pH buffer solution is traceable to Standard Reference Material from NIST.
0: 9,24
5: 9,16
10: 9,11
15: 9,05
20: 9,00
25: 8,95
30: 8,91
35: 8,88
40: 8,85
45: 8,82
50: 8,79