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Meters & Controllers

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Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In stock
$186.73 $199.00 -6%
Bluelab Soil pH Pen
In stock
$181.50
Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In stock
$181.50
Bluelab Guardian Monitor | 6.5ft Probe Cable
In stock
$176.32 $366.91 -52%
Save 12%
Inline pH Sensor, Heavy Duty
In stock
$174.23 $197.40 -12%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In stock
$155.54 $255.74 -39%
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In stock
$154.23 $202.71 -24%
Save 18%
GroStar GS2-E replacement Soil Spear pH electrode
In stock
$149.59 $181.99 -18%
Save 18%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In stock
$147.12 $178.99 -18%
Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM
In stock
$134.61
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$131.99
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In stock
$125.93
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In stock
$111.93 $147.11 -24%
Bluelab pH Pen Meter | Measures pH and Temperature
In stock
$108.56
Save 10%
1.5" Digital Flow Meter
In stock
$104.27 $115.50 -10%
Save 14%
GroStar GS1 pH Pen
In stock
$99.72 $115.99 -14%
Save 10%
1.25" Digital Flow Meter
In stock
$98.99 $110.25 -10%
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In stock
$93.75 $128.70 -27%
Save 10%
1" Digital Flow Meter
In stock
$93.71 $103.95 -10%
Save 18%
GroStar GS3 EC Pen
In stock
$93.69 $113.99 -18%
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