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GroLine Professional Portable Soil pH Meter
Regular price $772.00 USDRegular priceUnit price per -
Bluelab pH Controller
Regular price $594.95 USDRegular priceUnit price per -
GroLine Monitor for Hydroponic Nutrients with Inline Probe
Regular price $585.00 USDRegular priceUnit price per -
HANNA Direct Soil Measurement pH Portable Meter
Regular price $528.00 USDRegular priceUnit price per -
GroLine Waterproof Portable Hydroponics pH/EC/TDS/Temp Meter Kit
Regular price $491.00 USDRegular priceUnit price per -
GroLine pH Dosing System
Regular price From $469.95 USDRegular priceUnit price per -
GroLine Waterproof Portable pH/EC/TDS Meter
Regular price $324.95 USDRegular priceUnit price per -
HANNA HALO Wireless Soil pH Meter
Regular price $283.00 USDRegular priceUnit price per -
GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
Regular price $259.95 USDRegular priceUnit price per -
GroLine Direct Soil and Soilless pH Electrode
Regular price $250.00 USDRegular priceUnit price per -
Bluelab Multimedia pH Meter
Regular price $249.95 USDRegular priceUnit price per -
GroStar GS2 Soil pH Pen
Regular price $211.95 USDRegular priceUnit price per -
HANNA Low Range pH/Conductivity/TDS Tester
Regular price $195.00 USDRegular priceUnit price per -
General Hydroponics PRO pH
Regular price From $186.75 USDRegular priceUnit price per -
GroLine pH/EC/TDS Multiparameter Probes
Regular price From $180.00 USDRegular priceUnit price per -
GroLine HALO2 Wireless pH Tester for Soil
Regular price $175.00 USDRegular priceUnit price per -
SaleTNB Naturals pH UP
Regular price $170.95 USDRegular priceUnit price per$298.95 USDSale price $170.95 USDSale -
Bluelab Inline pH Probe
Regular price $168.45 USDRegular priceUnit price per -
Bluelab Soil pH Pen
Regular price $168.45 USDRegular priceUnit price per -
GroLine Soil pH Tester
Regular price $150.00 USDRegular priceUnit price per -
General Hydroponics pH Control Kit
Regular price $149.85 USDRegular priceUnit price per -
HM Digital 4 in 1 PH/EC/TDS/TEMP Combo Meter
Regular price $148.65 USDRegular priceUnit price per -
Bluelab pH Probe KCI Storage Solution
Regular price $125.95 USDRegular priceUnit price per -
Bluelab Leap pH Probe
Regular price $114.35 USDRegular priceUnit price per -
Bluelab pH 7.0 Calibration Solution
Regular price $100.95 USDRegular priceUnit price per -
Bluelab pH 4.0 Calibration Solution
Regular price $100.95 USDRegular priceUnit price per -
GroLine Waterproof Pocket pH/Temperature Tester
Regular price $99.95 USDRegular priceUnit price per -
GroStar GS1 pH Pen
Regular price $99.95 USDRegular priceUnit price per -
Bluelab pH Pen
Regular price $99.95 USDRegular priceUnit price per -
General Hydroponics pH Test Indicator
Regular price $95.65 USDRegular priceUnit price per -
Cutting Edge Solutions | pH Up
Regular price From $91.95 USDRegular priceUnit price per -
Cutting Edge Solutions | pH Down
Regular price From $91.95 USDRegular priceUnit price per -
Biobizz Bio·Up PH Regulator
Regular price From $83.50 USDRegular priceUnit price per -
Biobizz Bio·Down PH Regulator
Regular price From $83.50 USDRegular priceUnit price per -
HM Digital Waterproof pH Meter PH-200
Regular price $81.05 USDRegular priceUnit price per -
FoxFarm Cultivation Nation pH UP
Regular price $74.95 USDRegular priceUnit price per$99.65 USDSale price $74.95 USDSale -
General Hydroponics pH Up Liquid
Regular price From $73.45 USDRegular priceUnit price per -
General Hydroponics pH Down Liquid
Regular price From $72.95 USDRegular priceUnit price per -
Bluelab pH Replacement Probe
Regular price $71.15 USDRegular priceUnit price per -
GroLine Hydroponics pH Tester
Regular price $70.00 USDRegular priceUnit price per -
FoxFarm Cultivation Nation pH DOWN
Regular price From $50.95 USDRegular priceUnit price per$89.95 USDSale price From $50.95 USDSale -
Earth Juice | Crystal pH Down
Regular price From $45.80 USDRegular priceUnit price per -
GroStar Replacement Electrodes
Regular price From $41.91 USDRegular priceUnit price per -
HM Digital pH Meter PH-80
Regular price $35.10 USDRegular priceUnit price per -
Milwaukee Instruments pH600 Digital pH Pen
Regular price $27.95 USDRegular priceUnit price per -
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
Regular price $26.95 USDRegular priceUnit price per -
Earth Juice | Crystal pH Up
Regular price From $23.95 USDRegular priceUnit price per -
GroLine pH Calibration Buffer
Regular price From $20.00 USDRegular priceUnit price per -
GroLine Quick Calibration Solution for pH and EC Meters
Regular price From $20.00 USDRegular priceUnit price per -
Apera pH Probe Maintenance Kit
Regular price $19.75 USDRegular priceUnit price per -
Apera GroStar pH Calibration Kits
Regular price From $15.65 USDRegular priceUnit price per -
Milwaukee Instruments pH 7.01 Solution, 230 ml
Regular price $14.95 USDRegular priceUnit price per -
Milwaukee Instruments 4.01 pH Solution, 220 mL
Regular price $14.95 USDRegular priceUnit price per -
Microbe Life Hydroponics pH UP
Regular price $14.45 USDRegular priceUnit price per -
Microbe Life Hydroponics pH DOWN
Regular price $14.45 USDRegular priceUnit price per -
House & Garden pH + Osmosis Stabilizer
Regular price From $13.16 USDRegular priceUnit price per$598.95 USDSale price From $13.16 USDSale -
Active Air 2-Way Moisture/pH Meter
Regular price $7.95 USDRegular priceUnit price per
