Monitors, Meters, & Controllers

Reverse Osmosis Systems can be upgraded in many ways and a couple of those upgrades are almost essential. TDS (Total Dissolved Solids) and Pressure gauges are found on a lot of RO Systems because they simply let you know how your RO/DI System is performing but also helps you troubleshoot any possible problems you may encounter. Ultimately we want the cleanest water we can get and a TDS meter will let you know in a whole number how many dissolved solids are in your water and if the number is higher than zero, it is a good sign that your DI Resin should be changed or a possible problem with your Reverse Osmosis Membrane.

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30 Items

  1. RO Water Controller - Tunze
    Tunze
    RO Water Controller - Tunze
    $214.99

    Earn 214 Reward Points

    $214.99
  2. Single Inline TDS meter SM-1 - HM Digital
    HM Digital
    Single Inline TDS meter SM-1 - HM Digital
    $24.99

    Earn 24 Reward Points

    $24.99
  3. Triple Inline TDS Meter TRM-1 with Push Connect Fittings - HM Digital
    HM Digital
    Triple Inline TDS Meter TRM-1 - HM Digital
    $44.99

    Earn 44 Reward Points

    $44.99
  4. Glycerin Filled Pressure Gauge 1-100 PSI - Bulk Reef Supply
    Bulk Reef Supply
    Glycerin Filled Pressure Gauge 1-100 PSI - Bulk Reef Supply
    $20.49

    Earn 200 Reward Points Earn 100 Reward Points

    $20.49
  5. Air Filled Pressure Gauge 1-100 PSI - Bulk Reef Supply
    Bulk Reef Supply
    Air Filled Pressure Gauge 1-100 PSI - Bulk Reef Supply
    $12.99

    Earn 120 Reward Points Earn 60 Reward Points

    $12.99
  6. Deluxe Dual Inline TDS Meter with Backlight DM-2 - HM Digital
    HM Digital
    Deluxe Dual Inline TDS Meter with Backlight DM-2 - HM Digital
    $45.99

    Earn 45 Reward Points

    $45.99
  7. Titanium One - Inline TDS Meter - AutoAqua
    AutoAqua
    Titanium One - Inline TDS Meter - AutoAqua
    $24.99

    Earn 24 Reward Points

    $24.99
  8. Titanium S1 - Single Inline TDS Meter - AutoAqua
    AutoAqua
    Titanium S1 - Single Inline TDS Meter - AutoAqua
    $24.99

    Earn 24 Reward Points

    $24.99
  9. Titanium S2 - Dual Inline TDS Meter - AutoAqua
    AutoAqua
    Titanium S2 - Dual Inline TDS Meter - AutoAqua
    $33.99

    Earn 33 Reward Points

    $33.99
  10. Titanium S3 - Triple Inline TDS Meter - AutoAqua
    AutoAqua
    Titanium S3 - Triple Inline TDS Meter - AutoAqua
    $44.99

    Earn 44 Reward Points

    $44.99
  11. FM-2: Filter Monitor with Volumizer - HM Digital
    HM Digital
    FM-2: Filter Monitor with Volumizer - HM Digital
    $39.99

    Earn 39 Reward Points

    $39.99
  12. Watchdog Leak Detection Alarm
    Glentronics
    Watchdog Leak Detection Alarm
    $13.99

    Earn 130 Reward Points Earn 65 Reward Points

    $13.99
  13. LBS-10 Leak Block Sensor & Solenoid Valve - HM Digital
    HM Digital
    LBS-10 Leak Block Sensor & Solenoid Valve - HM Digital
    $53.00

    Earn 53 Reward Points

    $53.00
  14. HYDROS Dual Inline TDS Sensor - CoralVue
    Coralvue
    HYDROS Dual Inline TDS Sensor - CoralVue
    $49.99

    Earn 49 Reward Points

    $49.99
  15. Hydros DC Solenoid Water Valve -  Coralvue
    Coralvue
    Hydros DC Solenoid Water Valve - Coralvue
    $24.99

    Earn 24 Reward Points

    $24.99
  16. Hydros Leak Sensor - Coralvue
    Coralvue
    Hydros Leak Sensor - Coralvue
    $39.99

    Earn 39 Reward Points

    $39.99
  17. Hydros Water Level Sensor - Coralvue
    Coralvue
    Hydros Water Level Sensor - Coralvue
    $39.99

    Earn 39 Reward Points

    $39.99
  18. Hydros Rope Leak Sensor Extension -  Coralvue
    Coralvue
    Hydros Rope Leak Sensor Extension - Coralvue
    $29.99

    Earn 29 Reward Points

    $29.99
  19. Hydros Rope Leak Sensor Kit - Coralvue
    Coralvue
    Hydros Rope Leak Sensor Kit - Coralvue
    $39.99

    Earn 39 Reward Points

    $39.99
  20. Flow-lok Leak Detector for RODI Systems
    G.A. Murdock
    Flow-lok Leak Detector for RODI Systems
    $19.99

    Earn 190 Reward Points Earn 95 Reward Points

    $19.99
  21. Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    Hanna Instruments
    Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    $157.99

    Earn 157 Reward Points

    $157.99
  22. TDS-3 Handheld TDS Meter - HM Digital
    HM Digital
    TDS-3 Handheld TDS Meter - HM Digital
    $24.99

    Earn 24 Reward Points

    $24.99
  23. Hanna HI73127 pH Electrode
    Hanna Instruments
    HI73127 Spare pH Electrode - Hanna Instruments
    $55.00

    Earn 55 Reward Points

    $55.00
  24. PH-200 Waterproof pH Meter - HM Digital
    HM Digital
    PH-200 Waterproof pH Meter - HM Digital
    $79.99

    Earn 79 Reward Points

    $79.99
  25. COM-100 Waterproof EC/TDS Meter - HM Digital
    HM Digital
    COM-100 Waterproof EC/TDS Meter - HM Digital
    $76.95

    Earn 76 Reward Points

    $76.95
  26. TDS 342 Calibration Solution
    HM Digital
    TDS 342 Calibration Solution
    $7.99

    Earn 70 Reward Points Earn 35 Reward Points

    $7.99
  27. Replacement Flow-Lok leak detection pad
    G.A. Murdock
    Replacement Flow-lok Leak Detector Pad
    $4.39

    Earn 40 Reward Points Earn 20 Reward Points

    $4.39
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