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Meters & Controllers

Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 338
$94.53 $99.95 -5%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In Stock: 13
$30.13
GroStar GS3 EC Pen
In Stock: 93
$95.06 $113.99 -17%
HM Digital PH-80 pH/Temperature Meter
In Stock: 88
$38.81 $46.50 -17%
GroStar GS1 pH Pen
In Stock: 264
$99.72 $115.99 -14%
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In Stock: 170
$97.70 $147.11 -34%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In Stock: 86
$7.68 $9.49 -19%
Hanna pH, EC & TDS Tester | High Range
In Stock: 2
$308.24
Bluelab pH Probe KCl Storage Solution | 250ml
In Stock: 114
$165.48 / $27.58 per unit
(minimum purchase of 6)
Bluelab Meter Carrying Case | Meter Not Included
In Stock: 169
$24.14 $29.08 -17%
HM Digital TDS-3 Handheld TDS meter
In Stock: 23
$23.42 $33.99 -31%
GroStar GS4-E replacement pH/EC combo electrode
In Stock: 80
$66.71 $79.99 -17%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 89
$151.77 $181.99 -17%
Aeromixer Aerobuddy Timer + Power Controller
In Stock: 59
$80.14
Hydro Systems E-Dos Electric Pump Flow Meter Kit | with Clamp on Fittings
Out of stock
$2,993.45 $3,059.00 -2%
HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp
Out of stock
$76.32 $359.00 -79%
Dilution Solutions EC Calibration Solution | 20pc Box
In Stock: 225
$10.18 $24.95 -59%
Hydrofarm Electronic Water Timer
In Stock: 1129
$26.26 $31.49 -17%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In Stock: 11
$100.96 $202.71 -50%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In Stock: 26
$24.17 $28.99 -17%
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