Bluelab's 2.77 EC conductivity standard solutions are essential for use with all Bluelab EC/ppmproducts - a must in every grower's toolbox.
If you want to ensure the ongoing accuracy of your Bluelab conductivity products, we recommend that you clean and test them on a regular basis.
All Bluelab's conductivity Pens and Meters are factory calibrated, so you won’t need to recalibrate them. Instead, you should clean your Bluelab EC probe and then use Bluelab 2.77 EC Conductivity Standard Solution for optimum care.
High-quality solutions formulated for calibrating and/or testing conductivity probes