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PPM | TDS | EC Meters

HANNA® GroLine Soil Test Direct Soil EC Tester Hanna Instruments

$144.00

Hanna Soil Test Direct Soil EC & Temperature Tester HI98331

HANNA® GroLine Hydroponics pH Tester Hanna Instruments

$69.90

Hanna GroLine Hydroponics pH Tester HI98115

HANNA® GroLine Nutrient EC/TDS (ppm) Tester

$98.00

Hanna GroLine Nutrient EC/TDS Truncheon Tester HI98330

HANNA® GroLine Waterproof EC/TDS (ppm) Tester Hanna Instruments

$89.90

Hanna GroLine Waterproof EC/TDS (PPM) Tester HI98318

HANNA® GroLine Waterproof Hydroponic pH Tester Hanna Instruments

$89.90

Hanna GroLine Waterproof Hydroponic pH Tester HI98118

HANNA® GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester Hanna Instruments

$188.00

Hanna GroLine Waterproof pH/EC/TDS/Temperature Tester HI98131

HANNA® GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter Hanna Instruments

$288.00

Hanna GroLine Waterproof pH/EC/TDS/Temperature Meter HI9814

HANNA® GroLine Nutrient Monitor for pH, EC, TDS, Temperature Hanna Instruments

$389.00

Hanna GroLine Hydroponic Nutrient Monitor HI981420-01

HANNA® GroLine Hydroponic Monitor w/ INLINE PROBE for pH, EC, TDS, Temperature Hanna Instruments

$495.00

Hanna GroLine Hydroponic Nutrient Monitor with Inline Probe HI981421-01

Hanna® GroLine Electrode Cleaning Solution, 20 mL Sachets Hanna Instruments

From $2.29

Hanna GroLine General Purpose Electrode Cleaning Solution

HANNA® Groline QuickCal Calibration Solution Sachet, 20 mL Hanna Instruments

From $2.29

Hanna GroLine Quick Calibration Solution for pH & EC Meters

HANNA® GroLine pH 4.01 Calibration Buffer Sachets, 20 mL Hanna Instruments

From $2.29

Hanna GroLine pH 4.01 Calibration Buffer

HANNA® GroLine pH 7.01 Calibration Buffer Sachets, 20 mL Hanna Instruments

From $2.29

Hanna GroLine pH 7.01 Calibration Buffer

HANNA® Electrode Storage Solution, 500 mL Hanna Instruments

From $18.50

Hanna GroLine pH & ORP Electrode Storage Solution HI70300

Bluelab® pH 4.0 Solution, 20 mL Sachet Bluelab

$1.71

Bluelab pH 4.0 Solution, 20 mL Sachet

General Hydroponics® TDS Calibration Solution, 1500 ppm, qt General Hydroponics

$19.35

General Hydroponics 1500 PPM TDS Calibration Solution

GSG pH Probe KCl Storage Solution, 120 mL GardenSupplyGuys

$10.95

GSG pH Probe KCl Storage Solution, 120 mL

HM Digital® TDS / EC Calibration Solution, 1000 ppm HM Digital

$6.25

HM Digital TDS / EC Calibration Solution, 1000 ppm

Water Quality TDS Detection Pen

$24.99

Water Quality TDS Detection Pen

HANNA HI83300-01 Multiparameter Benchtop Photometer and pH meter

$1,390.00

Hanna Multiparameter Benchtop Photometer & pH Meter HI83300-01

AC Infinity Hydroponic Meter PRO Kit AC-PHM7

$159.00

AC Infinity Hydroponic Meter PRO Kit, All-In-One Ph Pen, Interchangeable Probe

GroLine 1413 uS/cm Conductivity Standard Sachets, 20 mL

From $2.29

Hanna GroLine 1413 µS/cm Conductivity Standard Solution

GroLine 5000 uS/cm Conductivity Standard Sachets, 20 mL

$2.29

Hanna GroLine 5000 µS/cm Conductivity Standard Solution

AC Infinity Hydroponic Meter PRO replacement probe AC-PPA7

$59.99

AC Infinity Replacement Probe for Hydroponic Meter AC-PPA7 PRO Kit