Bluelab pH 4.01 Calibration Liquid 20ml

Bluelab pH 4.01 Calibration Fluid 20ml is a calibration fluid for Bluelab products and meters. It’s perfect to calibrate your pH or combo meter with.

It is important if you want to maintain the accuracy and longevity of your Bluelab pH product to get into the habit of cleaning and calibrating regularly. Bluelab has a simple calibration process that is the same for all Bluelab’s different meters.

After cleaning your pH probe, you need to calibrate it with pH calibration solutions at two reference standards – 4.0 and 7.0 pH. After calibration, you can start measuring the pH again immediately. You will need to recalibrate every time you clean your pH probe and when your meter alerts you that a calibration is needed.