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.

Features

• Reliable waterproof, dustproof housing
• Replaceable electrode to provide long life and value
• Auto shutoff conserves battery life
• Large display screens

Replacement sensors:

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