Most of Bluelab’s EC/ppm equipment does not need calibrating as they are all factory calibrated here at Bluelab. The 2.77 EC conductivity standard solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/CF probe.
 

Bluelab solutions are manufactured specifically for Bluelab products are NIST certified and are made to a traceable standard to ensure your Bluelab products last longer and maintain accuracy. Contact us for more information on this EC calibration solution.