Bluelab® pH 4.0 Calibration Solution 500ml Water Pumps Bluelab's EC/CF equipment does not

Bluelab's EC/CF equipment does not need calibrating as they are all factory calibrated

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Bluelab® pH 4.0 Calibration Solution 500ml Water Pumps Bluelab's EC/CF equipment does notpH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH7. 0 first (buffer) then to pH4. 0 (slope). Bluelab's EC CF equipment does not need calibrating as they are all factory calibrated. The CF27. 7 (EC2. 77) solution is used as a reference or checking solution to ensure you have adequately cleaned the EC CF probe.