Hayward EASY-CH-DPHRXG Manual Del Usuario página 16

EN
6f. pH probe calibration
Always begin the calibration procedure with a calibration reset.
Note: If you have selected the "1 point cal.", the calibration will be made only in 1 point using the 7pH buff er solution.
Reference calibration
EasyChem Double and Plug version | pH · ORP Page 15 on 27
Only use spare parts supplied by Hayward brands ®