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Meters & Controllers

Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In Stock: 79
$77.04 / $12.84 per unit
(minimum purchase of 6)
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In Stock: 40
$116.08 $143.38 -19%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In Stock: 408
$193.80 $199.00 -3%
Active Air 2-Way Moisture/pH Meter
In Stock: 1018
$8.02 $11.84 -32%
Bluelab pH 4.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In Stock: 455
$139.56 / $23.26 per unit
(minimum purchase of 6)
Bluelab Conductivity Standard Solution | 120ml - 2.77EC
In Stock: 73
$104.52 / $17.42 per unit
(minimum purchase of 6)
Active Air 2-Way pH & Moisture Meter | 1ct
In Stock: 13
$10.47 $13.99 -25%
Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In Stock: 127
$75.84 / $12.64 per unit
(minimum purchase of 6)
Blumat Digital Moisture Meter | 12in
Out of stock
$166.78 / $83.39 per unit
(minimum purchase of 2)
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In Stock: 86
$33.25 $35.00 -5%
Active Aqua Grow Flow Ebb and Gro Controller Unit w/2 Pumps
In Stock: 109
$324.69 $389.33 -17%
Bluelab Conductivity Standard Solution | 500mL- 2.77 EC - Designed for Bluelab Products
In Stock: 31
$140.58 / $23.43 per unit
(minimum purchase of 6)
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 338
$99.50 $99.95
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In Stock: 170
$97.70 $147.11 -34%
HM Digital PH-80 pH/Temperature Meter
In Stock: 44
$38.81 $46.50 -17%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In Stock: 29
$8.92 $8.95
Bluelab pH Probe KCl Storage Solution | 250ml
In Stock: 114
$174.12 / $29.02 per unit
(minimum purchase of 6)
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In Stock: 86
$7.91 $9.49 -17%
GroStar pH calibration kit (pH 4/7, 8 oz. each)
In Stock: 121
$15.83 $18.99 -17%
Bluelab Meter Carrying Case | Meter Not Included
In Stock: 169
$24.14 $29.08 -17%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In Stock: 5
$27.39 $27.99 -2%
GroStar GS3 EC Pen
In Stock: 94
$95.06 $113.99 -17%
GroStar GS1 pH Pen
In Stock: 259
$99.72 $115.99 -14%
HM Digital TDS-3 Handheld TDS meter
In Stock: 31
$23.42 $33.99 -31%
Aeromixer Aerobuddy Timer + Power Controller
In Stock: 59
$68.92 $79.00 -13%
Hanna pH, EC & TDS Tester | High Range
In Stock: 2
$287.69 $293.99 -2%
GroStar GS4-E replacement pH/EC combo electrode
In Stock: 82
$66.71 $79.99 -17%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 89
$151.77 $181.99 -17%
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%
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