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Meters & Controllers

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GroStar pH calibration kit (pH 4/7, 8 oz. each)
In stock
$15.72 $18.99 -17%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In stock
$15.41 $21.29 -28%
Save 1%
Bluelab Probe Care Kit | for Bluelab Conductivity Probes
In stock
$15.17 $15.40 -1%
Save 2%
Bluelab Conductivity Standard Solution | 120ml - 2.77EC
In stock
$13.06 $13.26 -2%
Save 9%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In stock
$12.65 $13.90 -9%
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Milwaukee Instruments pH 7.01 Solution, 230 ml
In stock
$12.65 $13.90 -9%
SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH
In stock
$12.42 $16.99 -27%
Save 17%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In stock
$12.41 $14.99 -17%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In stock
$10.67 $13.49 -21%
Hydrofarm Active Air 3-Way Meter
In stock
$10.10 $14.99 -33%
Dilution Solutions EC Calibration Solution | 20pc Box
In stock
$9.89 $24.95 -60%
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Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In stock
$9.56 $9.71 -2%
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Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In stock
$9.56 $9.71 -2%
Save 2%
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In stock
$9.56 $9.71 -2%
Active Air 2-Way pH & Moisture Meter | 1ct
In stock
$9.12 $13.99 -35%
Active Air 3-Way Meter
In stock
$9.09 $13.09 -31%
Save 8%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In stock
$8.74 $9.49 -8%
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 2-Way Moisture/pH Meter
In stock
$8.17 $11.84 -31%
Save 16%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In stock
$7.51 $8.95 -16%
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