BlueLab Calibration Solution - 27.7CF/EC2.77 - 250mL
Calibration solution for Truncheon, Guardian (conductivity), and ppm/EC pen. 2.77 EC = 1350 TDS/ppm (500 scale) = 1890 ppm (700 ppm) The 2.77EC Conductivity solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/CF probe. These solutions should be stored in a cool place out of direct sun and heat. Please keep out of reach of children. They should be stored with the lids securely tightened.