Replacement sensor for WP pHTestr 3, 3+, 10, 20, and 30

For pHtestr 30 purchased before Oct. 2019

Replace electrodes when they break, no longer hold calibration, cannot be rehydrated, or are not compatible with your sample. For your convenience, cables, power adapters, and other accessories are available for your Oakton meters and pocket testers.

Compatible with: Oakton pHTestr 3, 3 , 10, 20 & 30