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Meters & Controllers

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Hanna General-Purpose Cleaning Solution | 230ml
Out of stock
$24.31 $24.69 -2%
Save 17%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In stock
$24.00 $28.99 -17%
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Hanna 4.01 pH Buffer Solution | 500ml
In stock
$23.56 $23.93 -2%
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Hanna 7.01 pH Buffer Solution | 500ml
In stock
$23.56 $23.93 -2%
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Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
Out of stock
$23.56 $23.93 -2%
HM Digital TDS-3 Handheld TDS meter
In stock
$22.76 $33.99 -33%
Bluelab Meter Carrying Case | Meter Not Included
In stock
$22.29 $29.08 -23%
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Bluelab pH Probe KCl Storage Solution | 250ml
In stock
$21.90 $22.24 -2%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In stock
$21.74 $29.99 -28%
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Bluelab Probe Care Kit | for Bluelab pH Probes
In stock
$21.06 $21.38 -1%
Save 16%
Dilution Solutions PH Calibration Solution | 20pcs
In stock
$20.92 $24.95 -16%
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GroStar pH Probe Maintanence Kit
In stock
$19.86 $23.99 -17%
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Bluelab Conductivity Standard Solution | 500mL- 2.77 EC - Designed for Bluelab Products
In stock
$17.56 $17.84 -2%
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Bluelab pH 4.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In stock
$17.56 $17.84 -2%
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Bluelab pH 7.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In stock
$17.56 $17.84 -2%
Save 17%
P3 International Save a Drop Water Meter
In stock
$16.52 $19.95 -17%
Save 17%
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%
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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%
Save 9%
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%
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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%
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