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Meters & Controllers

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Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In stock
$12.19 $14.35 -15%
Save 15%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In stock
$12.19 $14.35 -15%
Save 2%
Bluelab Conductivity Standard Solution | 120ml - 2.77EC
In stock
$12.15 $12.40 -2%
SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH
In stock
$11.48 $16.99 -32%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In stock
$11.46 $14.99 -24%
SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH
In stock
$9.86 $13.49 -27%
Hydrofarm Active Air 3-Way Meter
In stock
$9.33 $14.99 -38%
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Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In stock
$8.88 $9.06 -2%
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Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In stock
$8.88 $9.06 -2%
Save 2%
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In stock
$8.88 $9.06 -2%
Save 8%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In stock
$8.71 $9.49 -8%
Active Air 2-Way pH & Moisture Meter | 1ct
In stock
$8.43 $13.99 -40%
Active Air 3-Way Meter
In stock
$8.40 $13.09 -36%
Hort2O Digital Hygro-Thermometer | 9.8ft Temperature Sensor - Digital Display - Measures Temperatures 32°F to 122°F - Measures Humidity 20% to 98%
Out of stock
$8.06 $19.99 -60%
Active Air 2-Way Moisture/pH Meter
In stock
$7.55 $11.84 -36%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In stock
$7.20 $8.95 -20%
HM Digital PH-STOR pH Electrode Storage Solution
In stock
$6.49 $8.49 -24%
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