pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pHﾠinstruments areﾠcalibrated to pH7.0 first (buffer)ﾠthen to pH4.0 (slope). Bluelab's EC/CF equipment does not need calibrating as they are all factory calibrated. The CF27.7 (EC2.77)ﾠsolution is used as a reference or checking solutionﾠto ensure you have adequately cleaned the EC/CF probe.
Part Family Name Bluelab® Calibration Solution 20 ml Sachets