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pH Meters

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Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature
Out of stock
$1,412.28 $1,812.17 -22%
Bluelab pH Controller | 6.5ft Probe Cable - Dose pH Up or pH Down
Out of stock
$739.92 $756.13 -2%
Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$590.18 $814.77 -28%
Bluelab Guardian Monitor Connect | 6.5ft Probe Cable
Out of stock
$469.31 $620.47 -24%
Bluelab Combo Meter Plus | Measures pH, Conductivity & Temperature
In Stock: 24
$417.16 $550.11 -24%
Bluelab Guardian Monitor | 6.5ft Probe Cable
Out of stock
$408.30 $555.70 -27%
Bluelab Combo Meter | 6.5ft Probe Cable
In Stock: 106
$346.84 $467.38 -26%
Bluelab Soil pH Pen
In Stock: 13
$220.14 $288.16 -24%
Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In Stock: 40
$218.53 $288.16 -24%
GroStar GS2 Soil pH Pen
In Stock: 143
$215.87 $256.99 -16%
Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible
In Stock: 11
$202.75 $219.45 -8%
Inline pH Sensor, Heavy Duty
In Stock: 9
$180.83 $197.40 -8%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In Stock: 115
$170.86 $255.74 -33%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 102
$152.87 $181.99 -16%
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In Stock: 189
$151.62 $199.92 -24%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In Stock: 201
$150.35 $178.99 -16%
Bluelab pH Pen Meter | Measures pH and Temperature
In Stock: 352
$127.90 $172.35 -26%
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$126.04 $139.99 -10%
GroStar GS1 pH Pen
In Stock: 287
$99.72 $115.99 -14%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 340
$94.53 $99.95 -5%
Bluelab Combo Meter pH Replacement Probe | pH probe
In Stock: 452
$94.14 $126.85 -26%
GroStar GS4-E replacement pH/EC combo electrode
In Stock: 88
$67.19 $79.99 -16%
GroStar GS1-E replacement pH electrode
In Stock: 101
$42.83 $50.99 -16%
Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in
Out of stock
$40.64 $49.95 -19%
HM Digital PH-80 pH/Temperature Meter
In Stock: 90
$38.53 $46.50 -17%
HM Digital Replacement pH Sensor Probe for HM-500
Out of stock
$32.34 $59.99 -46%
Milwaukee Instruments pH600 Digital pH Pen
In Stock: 276
$31.07 $34.00 -9%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In Stock: 99
$29.44 $35.00 -16%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In Stock: 12
$27.39 $27.99 -2%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In Stock: 134
$22.05 $29.99 -26%
GroStar pH Probe Maintanence Kit
In Stock: 89
$20.15 $23.99 -16%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In Stock: 588
$15.64 $21.29 -27%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In Stock: 280
$12.64 $15.79 -20%
Hydrofarm Active Air 3-Way Meter
In Stock: 51
$10.86 $14.99 -28%
Active Air 2-Way pH & Moisture Meter | 1ct
In Stock: 13
$9.81 $13.99 -30%
Active Air 2-Way Moisture/pH Meter
In Stock: 1093
$8.29 $11.84 -30%
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