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ORP (Oxidation Reduction Potential)
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Hanna Instruments
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HI981030 GroLine Soil pH Tester
$125.00
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pHep 4 & 5 Waterproof pH Testers
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$88.00
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HI98121 Combo pH / ORP Tester
$179.00
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HI12302 HALO Bluetooth pH Meter
$165.00
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HI981420 GroLine Monitor for Hydroponics
$389.00
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HI11312 Halo Wireless General Use pH Meter
$205.00
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HI98201 ORP REDOX Tester
$105.00
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HI98311 DiST® 5 EC/TDS/Temperature Tester
$99.00
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FC2022 HALO Bluetooth Food pH Meter
$205.00
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HI5036-050 Quick Calibration Solution
$18.00
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HI98501 Checktemp Digital Thermometer
$37.00
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HI98331 Direct Soil Conductivity Tester
$119.00
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HI98103 Checker1 pH Tester
$29.95
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Combo pH / EC / TDS Tester
$150.00
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Magnetic Mini-Stirrer HI190M-1
$99.00
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HI98130 Combo pH/EC/TDS Tester
$150.00
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HI151-01 Checktemp 4 Rugged Folding Thermometer
$58.00
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HI145-01 T-Shaped Thermometer
$45.00
$30.00
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HI701 Free Chlorine Checker
$49.00
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HI96701 Free Chlorine Meter
$220.00
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