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Meters & Controllers

Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In Stock: 29
$8.54 $8.95 -5%
GroStar GS4-E replacement pH/EC combo electrode
In Stock: 83
$67.19 $79.99 -16%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 336
$95.22 $99.95 -5%
Bluelab Conductivity Standard Solution | 500mL- 2.77 EC - Designed for Bluelab Products
In Stock: 155
$131.70 / $21.95 per unit
(minimum purchase of 6)
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In Stock: 170
$72.24 $147.11 -51%
Bluelab pH Probe KCl Storage Solution | 250ml
In Stock: 298
$163.14 / $27.19 per unit
(minimum purchase of 6)
Aeromixer Aerobuddy Timer + Power Controller
In Stock: 56
$60.28 $79.00 -24%
HM Digital PH-80 pH/Temperature Meter
In Stock: 107
$38.53 $46.50 -17%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In Stock: 93
$9.43 $9.49 -1%
HM Digital TDS-3 Handheld TDS meter
In Stock: 17
$23.09 $33.99 -32%
Bluelab Meter Carrying Case | Meter Not Included
In Stock: 168
$24.32 $29.08 -16%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 101
$152.87 $181.99 -16%
Hydrofarm Electronic Water Timer
In Stock: 1138
$26.45 $31.49 -16%
Hydro Systems E-Dos Electric Pump Flow Meter Kit | with Clamp on Fittings
Out of stock
$3,015.30 $3,059.00 -1%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In Stock: 11
$99.54 $202.71 -51%
Dilution Solutions EC Calibration Solution | 20pc Box
In Stock: 225
$10.04 $24.95 -60%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In Stock: 23
$24.35 $28.99 -16%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In Stock: 20
$9.70 $13.90 -30%
GroStar GS1-E replacement pH electrode
In Stock: 101
$42.83 $50.99 -16%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
In Stock: 49
$35.38 $95.00 -63%
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