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Meters & Controllers

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HM Digital Hydromaster Replacement EC/TDS Probe
Out of stock
$40.49 $49.99 -19%
Save 19%
HM Digital PH-80 pH/Temperature Meter
In stock
$37.69 $46.50 -19%
Save 14%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In stock
$36.86 $42.95 -14%
Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in
Out of stock
$36.84 $49.95 -26%
Save 15%
Dilution Solutions HM Digital EC Tester | 6in x 1.7in x .7in
In stock
$33.99 $39.95 -15%
Save 2%
Milwaukee Instruments pH600 Digital pH Pen
In stock
$28.35 $29.00 -2%
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Bluelab Meter Carrying Case | Meter Not Included
In stock
$27.96 $29.08 -4%
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Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes
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$27.15 $28.24 -4%
Save 11%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
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$26.66 $30.00 -11%
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Hydrofarm Electronic Water Timer
In stock
$25.50 $31.49 -19%
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Hanna General-Purpose Cleaning Solution | 230ml
In stock
$23.74 $24.69 -4%
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GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In stock
$23.48 $28.99 -19%
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Hanna 4.01 pH Buffer Solution | 500ml
In stock
$23.01 $23.93 -4%
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Hanna 7.01 pH Buffer Solution | 500ml
Out of stock
$23.01 $23.93 -4%
Save 4%
Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm
In stock
$23.01 $23.93 -4%
HM Digital TDS-3 Handheld TDS meter
In stock
$22.26 $33.99 -35%
Hanna Electrode Storage Solution
In stock
$22.21
Save 4%
Bluelab pH Probe KCl Storage Solution | 250ml
In stock
$21.39 $22.24 -4%
Luster Leaf Rapitest Light & Moisture Meter | Dual Tester
In stock
$21.26 $29.99 -29%
Save 15%
Dilution Solutions EC Calibration Solution | 20pc Box
In stock
$21.24 $24.95 -15%
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