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HM Digital - EC/TDS/Temp Waterproof Hydro Tester - COM-80
Sale price$52.99

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HM Digital - HydroMaster HM-200 Portable pH/TDS/EC/Temp Meter
Sale price$274.95

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Hm Digital - Meter, TDS, Inline, Dm-1, 1/4" Tee
Sale price$85.68

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Hm Digital - Meter, TDS, Inline, Dm-2, 1/2"QC
Sale price$185.50
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Hm Digital - Meter, TDS, Inline, Dm-2, 1/4" Qc
Sale price$155.50

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Hm Digital - Meter, TDS, Inline, Dm-2, 3/8" Qc
Sale price$198.60

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HM Digital - PH/Temperature Meter - PH-80
Sale price$47.99

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HM Digital - Pro Series COM-100 Pen Style TDS/EC/Temp Meter
Sale price$74.95

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HM Digital - Pro Series COM-300 Pen Style pH/TDS/Temp Meter
Sale price$159.95

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HM Digital - Pro Series PH-200 Pen Style pH/Temp Meter
Sale price$99.95

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HM Digital - TDS-3 Handheld TDS meter
Sale price$36.99

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SONIC-PRO - Chemical Feed Flow Meter
Sale price$2,684.75