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pH Meters

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Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature
In stock
$1,013.58 $1,196.52 -15%
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Bluelab Connect pH Controller | for Bluelab Connect Devices
In stock
$578.88 $683.36 -15%
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Bluelab pH Controller | 6.5ft Probe Cable - Dose pH Up or pH Down
In stock
$542.66 $640.60 -15%
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Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$529.69 $537.97 -2%
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Bluelab Guardian Monitor Connect | 6.5ft Probe Cable
In stock
$347.04 $409.68 -15%
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Bluelab Combo Meter Plus | Measures pH, Conductivity & Temperature
In stock
$336.00 $341.25 -2%
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Bluelab Guardian Monitor | 6.5ft Probe Cable
In stock
$310.82 $366.91 -15%
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Bluelab Combo Meter | 6.5ft Probe Cable
In stock
$285.48 $289.94 -2%
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Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In stock
$216.99 $255.74 -15%
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GroStar GS2 Soil pH Pen
In stock
$212.78 $256.99 -17%
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Bluelab Soil pH Pen
In stock
$176.00 $178.75 -2%
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Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In stock
$176.00 $178.75 -2%
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GroStar GS2-E replacement Soil Spear pH electrode
In stock
$150.68 $181.99 -17%
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GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In stock
$148.20 $178.99 -17%
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Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$127.99 $129.99 -2%
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Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In stock
$122.11 $124.02 -2%
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Bluelab pH Pen Meter | Measures pH and Temperature
In stock
$105.27 $106.91 -2%
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GroStar GS1 pH Pen
In stock
$96.81 $115.99 -17%
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Bluelab Combo Meter pH Replacement Probe | pH probe
In stock
$77.48 $78.69 -2%
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GroStar GS4-E replacement pH/EC combo electrode
In stock
$66.23 $79.99 -17%
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HM Digital Replacement pH Sensor Probe for HM-500
In stock
$49.67 $59.99 -17%
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GroStar GS1-E replacement pH electrode
In stock
$42.21 $50.99 -17%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In stock
$39.62 $99.95 -60%
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HM Digital PH-80 pH/Temperature Meter
In stock
$38.53 $46.50 -17%
Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in
Out of stock
$37.66 $49.95 -25%
Milwaukee Instruments pH600 Digital pH Pen
In stock
$29.03
Save 9%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In stock
$27.30 $30.00 -9%
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Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In stock
$23.56 $23.93 -2%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In stock
$21.74 $29.99 -28%
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GroStar pH Probe Maintanence Kit
In stock
$19.86 $23.99 -17%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In stock
$15.41 $21.29 -28%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In stock
$10.67 $13.49 -21%
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