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Bluelab 2.77 EC Conductivity Standard Solution
"The 2.77EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe. Calibration Solution 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."
Specifications
| Volume (metric) | 250 ml, 500 ml |