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Meters & Controllers

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64
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In Stock: 10
$27.39 $27.99 -2%
Bluelab pH Probe KCl Storage Solution | 250ml
In Stock: 211
$27.19 $35.86 -24%
Bluelab Probe Care Kit | for Bluelab pH Probes
In Stock: 11
$27.13 $34.48 -21%
Hydrofarm Electronic Water Timer
In Stock: 1146
$26.45 $31.49 -16%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In Stock: 40
$24.35 $28.99 -16%
Bluelab Meter Carrying Case | Meter Not Included
In Stock: 170
$24.32 $29.08 -16%
Hanna General-Purpose Cleaning Solution | 230ml
In Stock: 5
$23.95 $26.59 -10%
Dilution Solutions PH Calibration Solution | 20pcs
In Stock: 66
$23.62 $24.95 -5%
HM Digital TDS-3 Handheld TDS meter
In Stock: 37
$23.09 $33.99 -32%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In Stock: 44
$22.05 $29.99 -26%
Bluelab Conductivity Standard Solution | 500mL- 2.77 EC - Designed for Bluelab Products
In Stock: 82
$21.95 $28.73 -24%
Bluelab pH 4.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In Stock: 36
$21.80 $28.73 -24%
Bluelab pH 7.0 Calibration Solutions | 500mL- Designed for Bluelab Products
In Stock: 459
$21.80 $28.73 -24%
GroStar pH Probe Maintanence Kit
In Stock: 89
$20.15 $23.99 -16%
Bluelab Probe Care Kit | for Bluelab Conductivity Probes
In Stock: 8
$19.56 $24.83 -21%
P3 International Save a Drop Water Meter
In Stock: 3735
$16.76 $19.95 -16%
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: 90
$15.95 $18.99 -16%
Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0
In Stock: 540
$15.64 $21.29 -27%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In Stock: 109
$13.21 $13.90 -5%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In Stock: 269
$13.21 $13.90 -5%
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: 133
$12.59 $14.99 -16%
Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products
In Stock: 193
$12.29 $15.63 -21%
Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products
In Stock: 145
$11.84 $15.63 -24%
Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products
In Stock: 197
$11.84 $15.63 -24%
Hydrofarm Active Air 3-Way Meter
In Stock: 51
$10.86 $14.99 -28%
Active Air 2-Way pH & Moisture Meter | 1ct
In Stock: 13
$9.81 $13.99 -30%
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)
In Stock: 100
$9.36 $9.49 -1%
Hort2O Digital Hygro-Thermometer | 9.8ft Temperature Sensor - Digital Display - Measures Temperatures 32°F to 122°F - Measures Humidity 20% to 98%
In Stock: 138
$8.85 $19.99 -56%
Active Air 3-Way Meter
In Stock: 820
$8.75 $13.09 -33%
Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM
In Stock: 29
$8.48 $8.95 -5%
Dilution Solutions EC Calibration Solution | 20pc Box
In Stock: 206
$8.37 $24.95 -66%
Active Air 2-Way Moisture/pH Meter
In Stock: 1093
$8.29 $11.84 -30%
Dilution Solutions PH Storage Solution | 60cc
Out of stock
$7.55 $7.95 -5%
HM Digital PH-STOR pH Electrode Storage Solution
In Stock: 83
$7.13 $8.49 -16%
Plastair Wrox Color Change Moisture Indicator | 3pc
Out of stock
$6.92 $7.79 -11%
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