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Meters & Controllers

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Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible
In stock
$199.79 $219.45 -9%
Bluelab Soil pH Pen
In stock
$199.56
Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In stock
$199.56
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In stock
$190.97 $199.00 -4%
Inline pH Sensor, Heavy Duty
In stock
$178.19 $197.40 -10%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In stock
$168.42 $255.74 -34%
GroStar GS2-E replacement Soil Spear pH electrode
In stock
$150.68 $181.99 -17%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In stock
$148.20 $178.99 -17%
Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM
In stock
$147.99
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In stock
$138.46
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$134.99
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In stock
$130.82 $202.71 -35%
Bluelab pH Pen Meter | Measures pH and Temperature
In stock
$119.35
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In stock
$112.75 $147.11 -23%
1.5" Digital Flow Meter
In stock
$106.64 $115.50 -8%
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In stock
$101.51 $128.70 -21%
1.25" Digital Flow Meter
In stock
$101.24 $110.25 -8%
Bluelab Conductivity Pen Meter | Measures Conductivity and Temperature
In stock
$100.26
GroStar GS1 pH Pen
In stock
$98.27 $115.99 -15%
1" Digital Flow Meter
In stock
$95.84 $103.95 -8%
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