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Meters & ControllersProducts found: 103

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128
Hydro Systems E-Dos Electric Pump Flow Meter Kit | with Clamp on Fittings
Out of stock
$2,862.35 $2,949.75 -3%
Aqua-X Pro Controller with AMP-3 Sensor Board,Free App
In stock
$2,426.11 $2,623.95 -8%
Aqua-X Plus Controller with AMP-3 Sensor Board,Free App
In stock
$1,222.22 $1,258.95 -3%
Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature
Out of stock
$1,205.72 $1,242.54 -3%
Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$542.10 $558.66 -3%
Bluelab pH Controller | 6.5ft Probe Cable - Dose pH Up or pH Down
In stock
$483.86 $640.60 -24%
Bluelab Connect pH Controller | for Bluelab Connect Devices
In stock
$434.66 $683.36 -36%
Bluelab Guardian Monitor Connect | 6.5ft Probe Cable
Out of stock
$412.83 $425.44 -3%
Bluelab Guardian Monitor | 6.5ft Probe Cable
Out of stock
$369.73 $381.02 -3%
Bluelab Combo Meter Plus | Measures pH, Conductivity & Temperature
In stock
$343.88 $354.38 -3%
Aqua-X Controller with Water Detector set, Free App
In stock
$320.94 $348.60 -8%
Active Aqua Grow Flow Ebb and Gro Controller Unit w/2 Pumps
In stock
$317.68 $389.33 -18%
Bluelab Pulse Multimedia EC & MC Meter | Measures EC, Moisture & Temperature
In stock
$300.79 $309.97 -3%
Bluelab Combo Meter | 6.5ft Probe Cable
In stock
$292.17 $301.09 -3%
Hanna pH, EC & TDS Tester | High Range
Out of stock
$253.37 $261.10 -3%
Heavy Duty Nutrient EC+Temp Sensor drop-in/inline compatible
In stock
$214.83 $241.50 -11%
Water Content Sensor with Cable Set
In stock
$212.21 $241.50 -12%
GroStar GS2 Soil pH Pen
In stock
$209.70 $256.99 -18%
HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp
In stock
$205.36 $359.00 -43%
Inline EC+Temp Sensor, Heavy Duty
In stock
$193.87 $219.45 -12%
Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible
In stock
$193.87 $219.45 -12%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In stock
$185.31 $199.00 -7%
Bluelab Soil pH Pen
In stock
$180.12 $185.62 -3%
Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In stock
$180.12 $185.62 -3%
Inline pH Sensor, Heavy Duty
In stock
$175.55 $197.40 -11%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In stock
$154.40 $255.74 -40%
GroStar GS2-E replacement Soil Spear pH electrode
In stock
$148.50 $181.99 -18%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In stock
$146.05 $178.99 -18%
Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM
In stock
$133.59 $137.67 -3%
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$130.99 $134.99 -3%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In stock
$128.93 $202.71 -36%
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In stock
$124.97 $128.79 -3%
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In stock
$111.11 $147.11 -24%
Bluelab pH Pen Meter | Measures pH and Temperature
In stock
$107.73 $111.02 -3%
1.5" Digital Flow Meter
In stock
$103.48 $115.50 -10%
GroStar GS1 pH Pen
In stock
$98.99 $115.99 -15%
1.25" Digital Flow Meter
In stock
$98.24 $110.25 -11%
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In stock
$93.06 $128.70 -28%
GroStar GS3 EC Pen
In stock
$93.01 $113.99 -18%
1" Digital Flow Meter
In stock
$93.00 $103.95 -11%
Bluelab Conductivity Pen Meter | Measures Conductivity and Temperature
In stock
$90.49 $93.26 -3%
2-in-1 EC + Temp Sensor for Reservoir
In stock
$89.07 $100.28 -11%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
In stock
$88.46 $95.00 -7%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In stock
$85.64 $99.95 -14%
Bluelab Combo Meter pH Replacement Probe | pH probe
In stock
$79.29 $81.72 -3%
pH Sensor for Reservoir
In stock
$78.46 $88.20 -11%
Aeromixer Aerobuddy Timer + Power Controller
In stock
$76.64 $79.00 -3%
GroStar GS4-E replacement pH/EC combo electrode
In stock
$65.27 $79.99 -18%
Blumat Digital Moisture Meter | 12in
Out of stock
$65.17 $85.99 -24%
Dilution Solutions HM Digital Meter | 7.3in x 1.3in x 1.3in
Out of stock
$64.22 $74.95 -14%
Gardena Smart Flow Water Meter
In stock
$48.13 $58.99 -18%
GroStar GS3-E replacement EC electrode
In stock
$44.05 $53.99 -18%
GroStar GS1-E replacement pH electrode
In stock
$41.60 $50.99 -18%
HM Digital Hydromaster Replacement EC/TDS Probe
Out of stock
$40.79 $49.99 -18%
HM Digital PH-80 pH/Temperature Meter
In stock
$37.97 $46.50 -18%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In stock
$37.71 $42.95 -12%
Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in
Out of stock
$37.11 $49.95 -26%
Dilution Solutions HM Digital EC Tester | 6in x 1.7in x .7in
In stock
$34.24 $39.95 -14%
HM Digital Replacement pH Sensor Probe for HM-500
In stock
$31.42 $59.99 -48%
Hanna Electrode Storage Solution
In stock
$30.16 $31.08 -3%
Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes
In stock
$28.45 $29.32 -3%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
In stock
$27.94 $30.00 -7%
Milwaukee Instruments pH600 Digital pH Pen
In stock
$27.00 $29.00 -7%
Hydrofarm Electronic Water Timer
In stock
$25.69 $31.49 -18%
Hanna General-Purpose Cleaning Solution | 230ml
In stock
$24.88 $25.64 -3%
Hanna 4.01 pH Buffer Solution | 500ml
In stock
$24.12 $24.85 -3%
Hanna 7.01 pH Buffer Solution | 500ml
In stock
$24.12 $24.85 -3%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In stock
$24.12 $24.85 -3%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In stock
$23.65 $28.99 -18%
HM Digital TDS-3 Handheld TDS meter
In stock
$22.43 $33.99 -34%
Bluelab pH Probe KCl Storage Solution | 250ml
In stock
$22.41 $23.10 -3%
Bluelab Meter Carrying Case | Meter Not Included
In stock
$21.96 $29.08 -24%
Bluelab Probe Care Kit | for Bluelab pH Probes
In stock
$21.55 $22.21 -3%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In stock
$21.42 $29.99 -29%
Dilution Solutions PH Calibration Solution | 20pcs
In stock
$21.39 $24.95 -14%
GroStar pH Probe Maintanence Kit
In stock
$19.57 $23.99 -18%
Bluelab Conductivity Standard Solution | 500mL- 2.77 EC - Designed for Bluelab Products
In stock
$17.97 $18.52 -3%
Bluelab pH 4.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In stock
$17.97 $18.52 -3%
Bluelab pH 7.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In stock
$17.97 $18.52 -3%
P3 International Save a Drop Water Meter
In stock
$16.28 $19.95 -18%
Bluelab Probe Care Kit | for Bluelab Conductivity Probes
In stock
$15.52 $16.00 -3%
GroStar pH calibration kit (pH 4/7, 8 oz. each)
In stock
$15.49 $18.99 -18%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In stock
$15.19 $21.29 -29%
Bluelab Conductivity Standard Solution | 120ml - 2.77EC
Out of stock
$13.36 $13.77 -3%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In stock
$12.94 $13.90 -7%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In stock
$12.94 $13.90 -7%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
Out of stock
$12.28 $15.79 -22%
SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH
In stock
$12.24 $16.99 -28%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In stock
$12.23 $14.99 -18%
Hydrofarm Active Air 3-Way Meter
In stock
$9.96 $14.99 -34%
Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In stock
$9.79 $10.08 -3%
Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In stock
$9.79 $10.08 -3%
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In stock
$9.79 $10.08 -3%
Active Air 2-Way pH & Moisture Meter | 1ct
In stock
$8.99 $13.99 -36%
Active Air 3-Way Meter
In stock
$8.96 $13.09 -32%
Hort2O Digital Hygro-Thermometer | 9.8ft Temperature Sensor - Digital Display - Measures Temperatures 32°F to 122°F - Measures Humidity 20% to 98%
In stock
$8.60 $19.99 -57%
Dilution Solutions EC Calibration Solution | 20pc Box
In stock
$8.13 $24.95 -67%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In stock
$7.74 $9.49 -18%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In stock
$7.68 $8.95 -14%
Active Air 2-Way Moisture/pH Meter
In stock
$7.68 $11.84 -35%
HM Digital PH-STOR pH Electrode Storage Solution
In stock
$6.92 $8.49 -18%
Plastair Wrox Color Change Moisture Indicator | 3pc
Out of stock
$6.87 $7.99 -14%
Dilution Solutions PH Storage Solution | 60cc
Out of stock
$6.83 $7.95 -14%
CannaBasics
CannaBasics

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