Buffer solution pH = 9,00 (20 °C) (Boric acid/Potassium chloride/Sodium hydroxide)
- Density: ~ 1,00 g/cm3
- Solub. in water: (20 ºC): miscible
- Tariff number: 3822 90 00 00
- Applications: This reference material is intended for the calibration of pH meters and electrodes used for pH measurement or as a control sample for measuring the pH value.
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
| Reference | ||
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SO10090250 |
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SO10091000 |
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