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pH Meters

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GroStar GS4-E replacement pH/EC combo electrode
In stock
$67.19 $79.99 -16%
Save 16%
HM Digital Replacement pH Sensor Probe for HM-500
In stock
$50.39 $59.99 -16%
Save 16%
GroStar GS1-E replacement pH electrode
In stock
$42.83 $50.99 -16%
Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in
Out of stock
$38.21 $49.95 -24%
Save 19%
HM Digital PH-80 pH/Temperature Meter
In stock
$37.69 $46.50 -19%
Save 2%
Milwaukee Instruments pH600 Digital pH Pen
In stock
$28.38 $29.00 -2%
Save 11%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In stock
$26.77 $30.00 -11%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In stock
$23.93
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In stock
$22.05 $29.99 -26%
Save 16%
GroStar pH Probe Maintanence Kit
In stock
$20.15 $23.99 -16%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In stock
$15.64 $21.29 -27%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In stock
$10.82 $13.49 -20%
Hydrofarm Active Air 3-Way Meter
In stock
$10.25 $14.99 -32%
Active Air 2-Way pH & Moisture Meter | 1ct
In stock
$9.25 $13.99 -34%
Active Air 2-Way Moisture/pH Meter
In stock
$8.29 $11.84 -30%
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