Video: How To - Calibrating the GroLine HI9814 Combo pH Meter in Cal Standard Mode

https://hubs.ly/H0b2m9R0 The GroLine family of meters offer different calibration modes to help growers work the way they want to. In this video, learn how to calibrate the HI9814 GroLine portable pH, EC, ppm, and temperature meter in Cal Standard Mode