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Meters & Controllers

Hanna pH, EC & TDS Tester | High Range
In Stock: 2
$283.49 $293.99 -4%
GroStar GS4-E replacement pH/EC combo electrode
In Stock: 87
$66.23 $79.99 -17%
Hydro Systems E-Dos Electric Pump Flow Meter Kit | with Clamp on Fittings
Out of stock
$2,949.75 $3,059.00 -4%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
In Stock: 90
$88.94 $95.00 -6%
Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$581.75 $814.77 -29%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In Stock: 11
$98.12 $202.71 -52%
Hydrofarm Electronic Water Timer
In Stock: 1141
$26.07 $31.49 -17%
Dilution Solutions EC Calibration Solution | 20pc Box
In Stock: 225
$8.25 $24.95 -67%
GroStar GS1-E replacement pH electrode
In Stock: 101
$42.21 $50.99 -17%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In Stock: 30
$24.00 $28.99 -17%
Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature
Out of stock
$1,392.10 $1,812.17 -23%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In Stock: 91
$13.01 $13.90 -6%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In Stock: 208
$13.01 $13.90 -6%
Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes
In Stock: 66
$34.28 $45.51 -25%
HM Digital Hydromaster Replacement EC/TDS Probe
Out of stock
$41.39 $49.99 -17%
Dilution Solutions HM Digital EC Tester | 6in x 1.7in x .7in
Out of stock
$36.15 $39.95 -10%
Dilution Solutions PH Calibration Solution | 20pcs
In Stock: 99
$23.27 $24.95 -7%
GroStar GS3-E replacement EC electrode
In Stock: 100
$44.70 $53.99 -17%
Hanna Electrode Storage Solution
In Stock: 3
$33.74 $34.99 -4%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In Stock: 86
$38.27 $42.95 -11%
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