EC and pH sensors need regular calibration. This application is a step by step guide through the calibration process of Compactima modules. It is applicable on modules EC2/pH2 Do/EC2 and Do/pH With clear visual feedback the app shows how to calibrate EC and pH sensors Required: CompactiMa modules HortiMaX EC or pH sensors Calibration fluids (EC 5 and pH 4 and 6)