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Meters & Controllers

HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp
Out of stock
$76.32 $359.00 -79%
Hydro Systems E-Dos Electric Pump Flow Meter Kit | with Clamp on Fittings
Out of stock
$2,993.45 $3,059.00 -2%
Dilution Solutions EC Calibration Solution | 20pc Box
In Stock: 225
$10.18 $24.95 -59%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In Stock: 11
$100.96 $202.71 -50%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
In Stock: 82
$90.26 $95.00 -5%
Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$630.11 $814.77 -23%
Hydrofarm Electronic Water Timer
In Stock: 1131
$26.26 $31.49 -17%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In Stock: 29
$24.17 $28.99 -17%
GroStar GS1-E replacement pH electrode
In Stock: 78
$42.52 $50.99 -17%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In Stock: 83
$13.21 $13.90 -5%
Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature
Out of stock
$1,475.99 $1,812.17 -19%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In Stock: 185
$13.21 $13.90 -5%
Dilution Solutions PH Calibration Solution | 20pcs
In Stock: 99
$24.85 $24.95
Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes
In Stock: 65
$37.12 $45.51 -18%
Dilution Solutions HM Digital EC Tester | 6in x 1.7in x .7in
Out of stock
$38.61 $39.95 -3%
HM Digital Hydromaster Replacement EC/TDS Probe
Out of stock
$41.69 $49.99 -17%
GroStar GS3-E replacement EC electrode
In Stock: 100
$45.02 $53.99 -17%
Plastair Wrox Color Change Moisture Indicator | 3pc
Out of stock
$83.04 / $6.92 per unit
(minimum purchase of 12)
Hanna Electrode Storage Solution
In Stock: 3
$34.24 $34.99 -2%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In Stock: 16
$35.82 $42.95 -17%
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