Buffer solution pH = 4,00 (20 °C) (Potassium hydrogen phthalate). SCHARLAU

SCHARLAU
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x 1 l :: Plastic bottle SO10041000  Check availability Buy

Characteristic
Volume : x 1 l

- Density: 1,01 g/cm3 
- Solub. in water: (20 ºC): miscible
- Tariff number: 3822 00 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: 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

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Technical documentation

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