Optimize nutrient strength during growth, flowering, and fruiting by knowing exactly what is going on with your plants. Use the Oakton pH tester with accurate ATC to get instant at-a-glance readings.
- Reliable waterproof, dustproof housing
- Replaceable electrode to provide long life and value
- Auto shutoff conserves battery life
- Large display screens
- OK-35624-09 for pHTestr 1
- OK-35624-29 for pHTestr 2
- OK-35653-01 pH 4.0?calibration solution