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Meters & Controllers

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GroStar pH calibration kit (pH 4/7, 8 oz. each)
In stock
$15.95 $18.99 -16%
Bluelab Probe Care Kit | for Bluelab Conductivity Probes
In stock
$15.64
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In stock
$15.64 $21.29 -27%
Bluelab Conductivity Standard Solution | 120ml - 2.77EC
In stock
$13.46
Save 6%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In stock
$13.04 $13.90 -6%
Save 6%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In stock
$13.04 $13.90 -6%
SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH
In stock
$12.60 $16.99 -26%
Save 16%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In stock
$12.59 $14.99 -16%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In stock
$10.82 $13.49 -20%
Hydrofarm Active Air 3-Way Meter
In stock
$10.25 $14.99 -32%
Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In stock
$9.86
Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In stock
$9.86
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In stock
$9.86
Active Air 2-Way pH & Moisture Meter | 1ct
In stock
$9.25 $13.99 -34%
Active Air 3-Way Meter
In stock
$9.23 $13.09 -29%
Save 5%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In stock
$9.02 $9.49 -5%
Dilution Solutions EC Calibration Solution | 20pc Box
In stock
$8.37 $24.95 -66%
Active Air 2-Way Moisture/pH Meter
In stock
$8.29 $11.84 -30%
Hort2O Digital Hygro-Thermometer | 9.8ft Temperature Sensor - Digital Display - Measures Temperatures 32°F to 122°F - Measures Humidity 20% to 98%
In stock
$7.46 $19.99 -63%
Save 16%
HM Digital PH-STOR pH Electrode Storage Solution
In stock
$7.13 $8.49 -16%
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