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Meters & Controllers

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Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible
In Stock: 7
$207.19 $219.45 -6%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In Stock: 431
$198.04 $199.00
Inline pH Sensor, Heavy Duty
In Stock: 8
$184.79 $197.40 -6%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In Stock: 115
$170.86 $255.74 -33%
Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM
In Stock: 25
$163.24 $213.70 -24%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 102
$152.87 $181.99 -16%
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In Stock: 185
$151.62 $199.92 -24%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In Stock: 202
$150.35 $178.99 -16%
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$128.80 $139.99 -8%
Bluelab pH Pen Meter | Measures pH and Temperature
In Stock: 382
$127.90 $172.35 -26%
1.5" Digital Flow Meter
In Stock: 11
$110.59 $115.50 -4%
Bluelab Conductivity Pen Meter | Measures Conductivity and Temperature
In Stock: 116
$109.79 $144.77 -24%
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In Stock: 47
$108.74 $143.38 -24%
1.25" Digital Flow Meter
In Stock: 10
$104.99 $110.25 -5%
GroStar GS1 pH Pen
In Stock: 287
$101.91 $115.99 -12%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In Stock: 11
$99.54 $202.71 -51%
1" Digital Flow Meter
In Stock: 12
$99.39 $103.95 -4%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 340
$96.60 $99.95 -3%
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In Stock: 170
$96.32 $147.11 -35%
GroStar GS3 EC Pen
In Stock: 99
$95.75 $113.99 -16%
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