Published : 2022-10-21 I would like to change my redox probe, mine is calibrated at 650mV - Categories : Questions about RedOX probes Your questions about pH and Redox probes for swimming pools ph-redox-pool.com bot: Question EN May 07, 2022, 4:13 pm . If you have any questions, please let us know. May 07, 2022, 4:13 pm hello, <table class="component message" style="border-collapse: collapse; cellpadding: 0; cellspacing: 0; table-border: 0; width: 1