3701-31-04 ( D )(6)(a) / ORP reading shall be 650 millivolts or greater.
Repeat ORP reading was 621 mv. Take necessary measures to ensure that the ORP reading is 650 mv or greater.
Have the ACC unit inspected to determined why the ORP is low.
Facility Type: Spa
[?] Inspection Type: Standard
Inspection Date: 30-January-2023