EC CALIBRATION SOLUTION
GroStar EC Calibration Kit (2.77 EC, 8 oz) contains a standard calibration solution for GroStar Testers. The 2.77 EC (ms/cm) conductivity standard calibration solution can be used as a reference or checking solution to ensure you have adequately cleaned and calibrated the EC/ppm probe.
Calibration Solution should be stored in a cool place out of direct sun and heat. It is a non-hazardous product made in USA.