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Meters & Controllers

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Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible
In Stock: 10
$207.19 $219.45 -6%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In Stock: 426
$198.04 $199.00
Inline pH Sensor, Heavy Duty
In Stock: 9
$184.79 $197.40 -6%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In Stock: 114
$173.30 $255.74 -32%
Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM
In Stock: 25
$165.57 $213.70 -23%
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In Stock: 183
$153.79 $199.92 -23%
GroStar GS2-E replacement Soil Spear pH electrode
In Stock: 102
$152.87 $181.99 -16%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In Stock: 198
$150.35 $178.99 -16%
Bluelab pH Pen Meter | Measures pH and Temperature
In Stock: 330
$129.73 $172.35 -25%
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$128.80 $139.99 -8%
Bluelab Conductivity Pen Meter | Measures Conductivity and Temperature
In Stock: 98
$111.36 $144.77 -23%
1.5" Digital Flow Meter
In Stock: 11
$110.59 $115.50 -4%
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In Stock: 36
$110.29 $143.38 -23%
1.25" Digital Flow Meter
In Stock: 10
$104.99 $110.25 -5%
GroStar GS1 pH Pen
In Stock: 286
$101.91 $115.99 -12%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In Stock: 11
$100.96 $202.71 -50%
1" Digital Flow Meter
In Stock: 12
$99.39 $103.95 -4%
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In Stock: 170
$97.70 $147.11 -34%
Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in
In Stock: 7
$96.60 $99.95 -3%
GroStar GS3 EC Pen
In Stock: 97
$95.75 $113.99 -16%
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