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pH Meters

Bluelab Guardian Monitor | 6.5ft Probe Cable
Out of stock
$435.91 $555.70 -22%
Bluelab pH Pen Meter | Measures pH and Temperature
In Stock: 321
$136.55 $172.35 -21%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In Stock: 220
$130.50 / $13.05 per unit
(minimum purchase of 10)
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In Stock: 288
$230.52 / $19.21 per unit
(minimum purchase of 12)
GroStar pH Probe Maintanence Kit
In Stock: 76
$20.00 $23.99 -17%
Milwaukee Instruments pH600 Digital pH Pen
In Stock: 287
$35.55
Bluelab Combo Meter pH Replacement Probe | pH probe
In Stock: 395
$100.49 $126.85 -21%
Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In Stock: 41
$233.31 $288.16 -19%
Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in
Out of stock
$41.85 $49.95 -16%
HM Digital Replacement pH Sensor Probe for HM-500
Out of stock
$32.80 $59.99 -45%
Bluelab Combo Meter Plus | Measures pH, Conductivity & Temperature
In Stock: 22
$445.38 $550.11 -19%
Bluelab pH Controller | 6.5ft Probe Cable - Dose pH Up or pH Down
Out of stock
$778.86
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In Stock: 64
$149.27 $178.99 -17%
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In Stock: 171
$161.87 $199.92 -19%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In Stock: 113
$173.30 $255.74 -32%
Bluelab Guardian Monitor Connect | 6.5ft Probe Cable
Out of stock
$501.06 $620.47 -19%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In Stock: 104
$162.60 / $27.10 per unit
(minimum purchase of 6)
Bluelab Combo Meter | 6.5ft Probe Cable
In Stock: 90
$370.29 $467.38 -21%
GroStar GS2 Soil pH Pen
In Stock: 114
$214.32 $256.99 -17%
Bluelab Soil pH Pen
In Stock: 12
$235.02 $288.16 -18%
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$136.99 $139.99 -2%
Active Air 2-Way Moisture/pH Meter
In Stock: 1018
$8.41 $11.84 -29%
Active Air 2-Way pH & Moisture Meter | 1ct
In Stock: 13
$10.47 $13.99 -25%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In Stock: 86
$33.25 $35.00 -5%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 338
$99.50 $99.95
HM Digital PH-80 pH/Temperature Meter
In Stock: 44
$38.81 $46.50 -17%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In Stock: 5
$27.39 $27.99 -2%
GroStar GS1 pH Pen
In Stock: 259
$99.72 $115.99 -14%
GroStar GS4-E replacement pH/EC combo electrode
In Stock: 82
$66.71 $79.99 -17%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 89
$151.77 $181.99 -17%
Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$630.11 $814.77 -23%
GroStar GS1-E replacement pH electrode
In Stock: 78
$42.52 $50.99 -17%
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