Hanna Instruments GroLine
HANNA Instruments is a manufacturer of analytical instrumentation providing meters & dosers to test parameters such as pH, EC, TDS, etc. Their Groline products are designed so indoor and greenhouse growers can get consistently accurate results.
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GroLine Professional Portable Soil pH Meter
Regular price $799.99Regular priceUnit price per -
HANNA Direct Soil Measurement pH Portable Meter
Regular price $559.99Regular priceUnit price per -
GroLine pH Dosing System
Regular price From $499.99Regular priceUnit price per -
GroLine Nutrient Dosing System
Regular price From $499.99Regular priceUnit price per -
GroLine Monitor for Hydroponic Nutrients with Inline Probe
Regular price $499.00Regular priceUnit price per -
GroLine Monitor for Hydroponic Nutrients
Regular price $479.99Regular 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 -
HANNA Portable High Range EC/TDS Meter
Regular price $240.00Regular priceUnit price per -
GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
Regular price $214.99Regular 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 -
Sold outHANNA Portable Lux Meter
Regular price $179.00Regular priceUnit price per -
GroLine HALO2 Wireless pH Tester for Soil
Regular price $159.99Regular priceUnit price per -
GroLine Soil Test Direct Soil Conductivity Tester
Regular price $159.99Regular priceUnit price per -
GroLine Soil pH Tester
Regular price $139.99Regular priceUnit price per -
GroLine Waterproof EC/TDS (ppm) Pocket Tester
Regular price $109.99Regular priceUnit price per -
GroLine Nutrient Tester
Regular price $99.99Regular priceUnit price per -
GroLine Waterproof Pocket pH/Temperature Tester
Regular price $99.99Regular priceUnit price per -
GroLine Hydroponics pH Tester
Regular price $59.99Regular priceUnit price per -
GroLine Storage Solution Sachets, 20 mL (box of 25)
Regular price $49.99Regular priceUnit price per -
GroLine Conductivity Standard Solution
Regular price From $24.99Regular priceUnit price per -
GroLine General Purpose Cleaning Solution
Regular price From $19.99Regular priceUnit price per -
GroLine Electrodes Storage Solution
Regular price From $19.99Regular priceUnit price per -
GroLine pH Calibration Buffer
Regular price From $19.99Regular priceUnit price per -
GroLine Quick Calibration Solution for pH and EC Meters
Regular price From $19.99Regular priceUnit price per
