pH Calibration Buffer Liquid kit for pH Probe (AZ861)

pH Calibration Buffer Liquid kit for pH Probe (AZ861) is required to callibrate the pH probe from time to time so that you get accurate readings.

Callibrate again pH4, pH7 and pH 10

Comprises :

1 x 500 ml bottle pH 4

1 x 500 ml bottle pH 7

1 x 500 ml bottle pH 10