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Meters & Controllers

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Bluelab Conductivity Standard Solution | 120ml - 2.77EC
In Stock: 72
$16.32 $21.37 -24%
GroStar pH calibration kit (pH 4/7, 8 oz. each)
In Stock: 93
$15.95 $18.99 -16%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In Stock: 576
$15.64 $21.29 -27%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In Stock: 93
$13.83 $13.90 -1%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In Stock: 269
$13.83 $13.90 -1%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In Stock: 30
$12.64 $15.79 -20%
SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH
In Stock: 40
$12.60 $16.99 -26%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In Stock: 136
$12.59 $14.99 -16%
Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In Stock: 80
$12.29 $15.63 -21%
Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In Stock: 121
$11.84 $15.63 -24%
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In Stock: 598
$11.84 $15.63 -24%
Hydrofarm Active Air 3-Way Meter
In Stock: 63
$10.86 $14.99 -28%
Active Air 2-Way pH & Moisture Meter | 1ct
In Stock: 13
$9.81 $13.99 -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: 136
$8.85 $19.99 -56%
Active Air 3-Way Meter
In Stock: 1290
$8.75 $13.09 -33%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In Stock: 29
$8.67 $8.95 -3%
Dilution Solutions EC Calibration Solution | 20pc Box
In Stock: 206
$8.37 $24.95 -66%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In Stock: 103
$7.97 $9.49 -16%
Active Air 2-Way Moisture/pH Meter
In Stock: 1094
$7.91 $11.84 -33%
Dilution Solutions PH Storage Solution | 60cc
Out of stock
$7.71 $7.95 -3%
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