Buffer pH 4.00

Identification                       

Taric code: 3822 00 00

Applications                     

for calibrating pH-meters, analytical chemistry.

Specifications                    

pH at 20 ˚C………………………………………. 4,00

uncertainty ± 0,01

Composition per litre is 10,21g 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.

Packaging

• 1000 ml

Physical data                             

• Density: 1,01 g/cm3
• Solub. in water: (20 ºC): miscible
• pH(20 ºC) 4,00