pH Buffer solutions

For calibration of pH meters.

Accuracy: pH is ±0,02 at 25 °C

Zertifizierung: Traceable to NIST.

Achtung! Bitte beachten: Please note that the pH 4 and 10 buffers contain formaldehyde <0,1% and the pH 7 buffer contains formaldehyde 0,1 to 1%.