VitaLink CF Standard Calibration Fluid 2.8mS is an easy way to adjust the EC meter accurately. The water nutrient content EC describes the electrical conductivity of water and in this liquid the starnard EC value is 2.8 mS.
Put the end of the meter into the calibration fluid and wait for a moment to confirm the correct reading. Adjust the meter to display a value of EC 2.8. Use to Calibrate your EC/CF meter every week to ensure maximum accuracy.
There are two sizes of EC calibration fluid: 250 ml and 1000 ml.