Buffer solution (Potassium dihydrogen phosphate/di-Sodium hydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (25°C) CertiPUR® 1 * 30 items

For calibration of pH meters.

Practical 30 ml sachets - one use per sachet - no risk of contamination.
Solutions are always fresh and ready to use.
Traceable to SRM from NIST and PTB.
Reference temperature: +25°C.
Precision: Deviation is max. ±0,015 pH units.
pH value is measured with a combined glass electrode after 5-point calibration according to DIN 19268 with reference buffer solutions according to DIN 19266, IUPAC, NIST, Ph. Eur. and USP.