Collection: pH / TDS / EC / Temp Meters

Keep your plants growing healthy with our fast, reliable and accurate pH / TDS / EC / Temperature Meters!
41 products
  • Hydrofarm 3 Way Soil Meter
    Vendor
    Hydrofarm
    Regular price
    $13.99
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    $13.99
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  • HM Digital pH/Temp Hydro Tester (PH-80)
    Vendor
    HM Digital
    Regular price
    $67.99
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    $67.99
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  • Alfred Digital pH/Temperature & EC/TDS/Temperature Testers
    Alfred Digital pH Temperature EC TDS Water Meters
    Vendor
    Alfred Hydroponic
    Regular price
    from $47.99
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    from $47.99
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  • Bluelab pH Pen
    Vendor
    Bluelab
    Regular price
    $169.99
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    $169.99
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  • Bluelab Conductivity Pen (EC or PPM)
    Vendor
    Bluelab
    Regular price
    $129.99
    Sale price
    $129.99
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  • Luster Leaf Soil Testers
    Vendor
    Luster Leaf
    Regular price
    from $11.99
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    from $11.99
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  • Bluelab TDS Truncheon Meter Original & Commercial
    Bluelab Truncheon Nutrient Meter
    Vendor
    Bluelab
    Regular price
    $199.99
    Sale price
    $199.99
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  • Bluelab Combo Meter pH/EC/CF/TDS/Temp
    Vendor
    Blue Lab
    Regular price
    from $109.99
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    from $109.99
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  • Holland Greenhouse Moisture and pH Meter
    Vendor
    Holland Greenhouse
    Regular price
    $13.99
    Sale price
    $13.99
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  • HM Digital EC/TDS Hydro Tester (COM-80)
    hm digital com-80 tds ec meter
    Vendor
    HM Digital
    Regular price
    $46.99
    Sale price
    $46.99
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  • Bluelab® pH Controller
    Vendor
    Bluelab
    Regular price
    $799.99
    Sale price
    $799.99
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  • Bluelab® Guardian Monitor
    Vendor
    Bluelab
    Regular price
    $559.99
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    $559.99
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  • HM Digital Handheld TDS/Temperature Meter (TDS-3) (w/ Carrying Case)
    hm digital tds and temperature meter tds-3 with carrying case
    Vendor
    HM Digital
    Regular price
    $27.99
    Sale price
    $27.99
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  • Hanna Intruments GroLine pH Tester (HI98115)
    Hanna Intruments GroLine pH Tester (HI98115)
    Vendor
    Hanna Instruments
    Regular price
    from $49.99
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    from $49.99
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  • [HI98311] HANNA DiST5 EC/TDS/Temperature Tester (0-3999 µS/cm)
    Vendor
    Hanna Instruments
    Regular price
    $179.99
    Sale price
    $179.99
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  • [HI98130] HANNA Combo pH/EC/TDS Tester (High Range)
    Vendor
    Hanna Instruments
    Regular price
    $259.99
    Sale price
    $259.99
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  • [HI981401N] HANNA Gro'Check pH Meter with LCD
    Vendor
    Hanna Instruments
    Regular price
    $159.99
    Sale price
    $159.99
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  • [HI98129] HANNA Combo pH/EC/TDS Tester (Low Range)
    Vendor
    Hanna Instruments
    Regular price
    $219.99
    Sale price
    $219.99
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  • [HI98127] HANNA pHep4 (pH & Temp Tester) RED
    Vendor
    Hanna Instruments
    Regular price
    $129.99
    Sale price
    $129.99
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  • [HI98128] HANNA pHep5 (pH & Temp Tester) RED
    Vendor
    Hanna Instruments
    Regular price
    $149.99
    Sale price
    $149.99
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  • Hanna pH / EC / TDS Portable Meter
    Vendor
    Hanna Instruments
    Regular price
    from $159.99
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    from $159.99
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  • HM Digital HydroMaster HM-100 (Special Order)
    Vendor
    HM Digital
    Regular price
    $349.99
    Sale price
    $349.99
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  • Nutradip Meter & Solution
    Vendor
    Future Harvest
    Regular price
    from $29.99
    Sale price
    from $29.99
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  • HANNA Waterproof pH Tester (HI98107)
    Vendor
    Hanna Instruments
    Regular price
    $79.99
    Sale price
    $79.99
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  • Hanna DiST1 TDS Tester (HI98301)
    Vendor
    Hanna Instruments
    Regular price
    $79.99
    Sale price
    $79.99
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  • Bluelab® Pro Controller
    Vendor
    Bluelab
    Regular price
    $1,349.99
    Sale price
    $1,349.99
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  • Bluelab® pH Controller Connect
    Vendor
    Bluelab
    Regular price
    $999.99
    Sale price
    $999.99
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  • Bluelab® Guardian Monitor Connect Inline
    Vendor
    Bluelab
    Regular price
    from $269.99
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    from $269.99
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  • Bluelab® Guardian Monitor Connect PH+EC+TEMP
    Vendor
    Bluelab
    Regular price
    $559.99
    Sale price
    $559.99
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  • HM Digital HydroMaster pH/EC/TDS/Temp Continuous Combo (HM-500)
    hm digital hm-500 continuous combo meter
    Vendor
    HM Digital
    Regular price
    $489.99
    Sale price
    $489.99
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  • HM Digital HydroMaster pH/EC/TDS/Temp Combo Meter (HM-200)
    Vendor
    HM Digital
    Regular price
    $378.99
    Sale price
    $378.99
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  • HM Digital pH/EC/TDS/Temp Waterproof Meter (COM-300)
    Vendor
    HM Digital
    Regular price
    $249.99
    Sale price
    $249.99
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  • HM Digital Professional Series pH/Temp Meter PH-200
    Vendor
    HM Digital
    Regular price
    $149.99
    Sale price
    $149.99
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  • Bluelab Multimedia pH Meter
    Vendor
    Bluelab
    Regular price
    $369.99
    Sale price
    $369.99
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  • Bluelab Combo Plus Meter
    Vendor
    Bluelab
    Regular price
    $499.99
    Sale price
    $499.99
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  • HM Digital Pocket Size TDS/Temperature Meter (TDS-4TM)
    hm digital tds and temperature meter tds-4tm
    Vendor
    HM Digital
    Regular price
    $38.99
    Sale price
    $38.99
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  • HM Digital TDS EZ Water Quality Tester
    tds ez water quality tester
    Vendor
    HM Digital
    Regular price
    $32.99
    Sale price
    $32.99
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  • HM Digital Professional Series EC/TDS/Temperature Meter (COM-100)
    hm digital com-100 ec tds temp professional meter
    Vendor
    HM Digital
    Regular price
    $109.99
    Sale price
    $109.99
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  • Bluelab Soil pH Pen
    Bluelab Soil pH Pen
    Vendor
    Bluelab
    Regular price
    $239.99
    Sale price
    $239.99
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  • Hanna Instruments Soil Test Direct Soil EC Tester (HI98331)
    Hanna Instruments Soil Test Direct Soil EC Tester HI98331
    Vendor
    Hanna Instruments
    Regular price
    $139.99
    Sale price
    $139.99
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