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GroLine Professional Portable Soil pH Meter
Regular price $799.99Regular priceUnit price per -
Bluelab pH Controller
Regular price $594.65Regular priceUnit price per -
HANNA Direct Soil Measurement pH Portable Meter
Regular price $559.99Regular priceUnit price per -
GroLine pH Dosing System
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GroLine Monitor for Hydroponic Nutrients with Inline Probe
Regular price $499.00Regular priceUnit price per -
GroLine Waterproof Portable Hydroponics pH/EC/TDS/Temp Meter Kit
Regular price $459.99Regular priceUnit price per -
GroLine Waterproof Portable pH/EC/TDS Meter
Regular price $299.00Regular priceUnit price per -
Sold outHANNA HALO Wireless Soil pH Meter
Regular price $283.00Regular priceUnit price per -
GroLine Direct Soil and Soilless pH Electrode
Regular price $259.99Regular priceUnit price per -
Bluelab Multimedia pH Meter
Regular price $249.95Regular priceUnit price per -
GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
Regular price $214.99Regular priceUnit price per -
GroStar GS2 Soil pH Pen
Regular price $211.95Regular priceUnit price per -
HANNA Low Range pH/Conductivity/TDS/Temp Tester
Regular price $209.99Regular priceUnit price per -
GroLine pH/EC/TDS Multiparameter Probes
Regular price From $184.99Regular priceUnit price per -
SaleTNB Naturals pH UP
Regular price $170.95Regular priceUnit price per$298.95Sale price $170.95Sale -
Bluelab Inline pH Probe
Regular price $168.45Regular priceUnit price per -
Bluelab Soil pH Pen
Regular price $168.45Regular priceUnit price per -
GroLine HALO2 Wireless pH Tester for Soil
Regular price $159.99Regular priceUnit price per -
General Hydroponics pH Control Kit
Regular price $151.45Regular priceUnit price per -
HM Digital 4 in 1 PH/EC/TDS/TEMP Combo Meter COM-300L
Regular price $148.65Regular priceUnit price per -
GroLine Soil pH Tester
Regular price $139.99Regular priceUnit price per -
Central Coast Garden pH Down
Regular price From $139.20Regular priceUnit price per -
Central Coast Garden pH Up
Regular price From $139.20Regular priceUnit price per -
Bluelab pH Probe KCI Storage Solution
Regular price $125.95Regular priceUnit price per -
HM Digital pH/TDS/EC/Temp Meter COM-300
Regular price $121.75Regular priceUnit price per -
Bluelab Leap pH Probe
Regular price $114.35Regular priceUnit price per -
Bluelab pH 7.0 Calibration Solution
Regular price $100.95Regular priceUnit price per -
Bluelab pH 4.0 Calibration Solution, 500 ml
Regular price $100.95Regular priceUnit price per -
GroLine Waterproof Pocket pH/Temperature Tester
Regular price $99.99Regular priceUnit price per -
GroStar GS1 pH Pen
Regular price $99.95Regular priceUnit price per -
Bluelab pH Pen
Regular price $99.95Regular priceUnit price per -
General Hydroponics pH Test Indicator
Regular price $96.75Regular priceUnit price per -
General Hydroponics PRO pH Adjusters
Regular price From $93.35Regular priceUnit price per -
Cutting Edge Solutions | pH Up
Regular price From $91.95Regular priceUnit price per -
Cutting Edge Solutions | pH Down
Regular price From $91.95Regular priceUnit price per -
Biobizz Bio·Down pH Regulator
Regular price From $84.55Regular priceUnit price per -
HM Digital Waterproof pH Meter PH-200
Regular price $81.05Regular priceUnit price per -
Biobizz Bio·Up pH Regulator
Regular price From $78.45Regular priceUnit price per -
General Hydroponics pH Down Liquid
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General Hydroponics pH Up Liquid
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Bluelab pH Replacement Probe
Regular price $71.15Regular priceUnit price per -
GroLine Hydroponics pH Tester
Regular price $59.99Regular priceUnit price per -
GroStar Replacement Electrodes
Regular price From $41.91Regular priceUnit price per -
FoxFarm Cultivation Nation pH DOWN
Regular price From $39.95Regular priceUnit price per -
HM Digital pH Meter PH-80
Regular price $35.10Regular priceUnit price per -
Milwaukee Instruments pH600 Digital pH Pen
Regular price $27.95Regular priceUnit price per -
Milwaukee Instruments pH 600 Tester w/1 Point Manual Calibration
Regular price $26.95Regular priceUnit price per -
Earth Juice | Crystal pH Adjusters
Regular price From $20.65Regular priceUnit price per -
GroLine pH Calibration Buffer
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GroLine Quick Calibration Solution for pH and EC Meters
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Apera pH Probe Maintenance Kit
Regular price $19.75Regular priceUnit price per -
Apera GroStar pH Calibration Kits
Regular price From $15.65Regular priceUnit price per -
Milwaukee Instruments pH 7.01 Solution, 230 ml
Regular price $14.95Regular priceUnit price per -
Milwaukee Instruments 4.01 pH Solution, 220 mL
Regular price $14.95Regular priceUnit price per -
Microbe Life Hydroponics pH UP
Regular price $14.39Regular priceUnit price per -
Microbe Life Hydroponics pH DOWN
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House & Garden pH + Osmosis Stabilizer
Regular price From $13.16Regular priceUnit price per$598.95Sale price From $13.16Sale -
Sold outFoxFarm Cultivation Nation pH UP
Regular price From $12.85Regular priceUnit price per -
Active Air 2-Way Moisture/pH Meter
Regular price $7.95Regular priceUnit price per
