Bluelab pH 4.0 buffer 250 ml, calibration solution BOX 6 pcs.

Bluelab pH 4.0 250 ml, calibration solution for pH meters.

To improve the accuracy and lifespan of the Bluelab pH meter, you must get into the habit of regular cleaning and calibration. Calibration is an easy process to perform and is the same for all Bluelab pH meters and pens.

After cleaning the pH probe, you must calibrate it using calibration solutions at two reference standards - 4.0 and 7.0 pH. After calibration, you can immediately start measuring pH again. You must recalibrate whenever you clean the pH probe and whenever the meter indicates that calibration is required.