Oakton Replaceable Electrodes pH WP 2 Pen

This part number is for a replacement electrode only, for yourOakton pH WP 2 pen (not the actualunit itself).
Optimize nutrient strength during growth, flowering, and fruiting. Reliable waterproof, dustproof housing and replaceable electrode provide long life and value, meaning you won’t need to invest in or calibrate another Oakton pen once you’ve become comfortable using yours.

Replacement sensors:

• OK-35624-09 for pHTestr 1
• OK-35624-29 for pHTestr 2
• OK-35653-01 pH 4.0?calibration solution