*ATC-Automatic Temperature Compensation
Optimize nutrient strength
during growth, flowering,
and fruiting
Reliable waterproof, dustproof housing and
replaceable electrode provide long life and value.
Auto shutoff conserves battery life.
Oakton pH Testers 10, 20, & 30
feature 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