Tds ?

Discussion in 'Water Parameters and Additives' started by Warr7207, 22 Feb 2008.

  1. Warr7207

    Warr7207

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    Got myself a tds meter. But what should be the reading of my RO water ?
     
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  3. Kanga

    Kanga Retired Moderator MASA Contributor

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    aanything below 10 is fine, but ideally 0
     
  4. Warr7207

    Warr7207 Thread Starter

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    thanks and when you get to 10 what is this indicating about the RO unit ?
     
  5. neilharris

    neilharris

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    What type of unit do you have and do you use di resin?
     
  6. Warr7207

    Warr7207 Thread Starter

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    I have a waterboy unit (sure you don't get them in the UK)

    Uses resin.

    Measurement is 3.
     
  7. Kanga

    Kanga Retired Moderator MASA Contributor

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    3 is fine:thumbup:
     
  8. Mike

    Mike Retired Moderator

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    If you are running an Ro filter with DI resin cartridge then the only tds you want is zero, how old is the membrane and DI?
     
  9. Warr7207

    Warr7207 Thread Starter

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    6 months both
     
  10. Mike

    Mike Retired Moderator

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    Change the DI granules and i think you will see 0TDS
     
  11. Warr7207

    Warr7207 Thread Starter

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    Thanks will do
     
  12. Galibore

    Galibore Retired Moderator

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    Warr,

    Is the reading straight from the RO pipe? Mine used to read 3 until I realised it's actually 0 until I put it in the container that I used. The it becomes 3.
     
  13. viper357

    viper357 Admin MASA Contributor

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    6 months is time for a DI resin AND pre-filter replacement. Best to replace those as regularly as possible (3 months if used often) in order to ensure you keep a good flow rate out of the RO unit and also to protect your membrane. Membrane replacement is generally recommended every 3 years.
     
  14. Warr7207

    Warr7207 Thread Starter

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    In small container from my RO barrel
     
  15. Warr7207

    Warr7207 Thread Starter

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    Thanks for the heads up, never knew this
     
  16. Mike

    Mike Retired Moderator

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    Just to add, you should look to get some inline taps to keep the membrane wet, when you turn the mains off, this will prolong it's life
     
  17. Warr7207

    Warr7207 Thread Starter

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    How do I do this ?
     
  18. Mike

    Mike Retired Moderator

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    You buy inline taps, fit them very simply into your inlet, waste and good water, then switch them shut when you have finished running off your R/O
     
  19. Warr7207

    Warr7207 Thread Starter

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    OK, Basically leaving everything wet
     
  20. Geordie

    Geordie

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    Got to agree........ DI RESIN Should polish every last thing out.

    0 if not time to change the filters... and resin.
     
  21. Warr7207

    Warr7207 Thread Starter

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    Replaced resin, now 0 :thumbup::thumbup::thumbup:
     
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