Bluelab EC Calibration Fluid 2.77 is essential for cleaning EC meters. Bluelab EC meters are factory calibrated, so you no longer have to worry about calibrating them, but cleaning them is recommended. Regular cleaning and continuous maintenance maximize the life and accuracy of EC meters - this kit is a complete help. It is recommended that EC meters be cleaned every 30 days. The EC calibration solution is required for EC measuring instruments.
