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Meters & Controllers

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GroStar pH Probe Maintanence Kit
In stock
$19.86 $23.99 -17%
P3 International Save a Drop Water Meter
In stock
$16.52 $19.95 -17%
GroStar pH calibration kit (pH 4/7, 8 oz. each)
In stock
$15.72 $18.99 -17%
Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In stock
$15.63
Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In stock
$15.63
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In stock
$15.63
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In stock
$15.41 $21.29 -28%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In stock
$13.34 $13.90 -4%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In stock
$13.34 $13.90 -4%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
Out of stock
$12.46 $15.79 -21%
SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH
In stock
$12.42 $16.99 -27%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In stock
$12.41 $14.99 -17%
Hydrofarm Active Air 3-Way Meter
In stock
$11.77 $14.99 -21%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In stock
$11.72
Active Air 2-Way pH & Moisture Meter | 1ct
In stock
$10.63 $13.99 -24%
Dilution Solutions PH Storage Solution | 60cc
Out of stock
$10.41
Hort2O Digital Hygro-Thermometer | 9.8ft Temperature Sensor - Digital Display - Measures Temperatures 32°F to 122°F - Measures Humidity 20% to 98%
In stock
$8.72 $19.99 -56%
Active Air 3-Way Meter
In stock
$8.62 $13.09 -34%
Dilution Solutions EC Calibration Solution | 20pc Box
In stock
$8.25 $24.95 -67%
Active Air 2-Way Moisture/pH Meter
In stock
$8.17 $11.84 -31%
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