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Thread: Water Fiilter: Resin Change and TDS Meter

  1. #1
    irarref's Avatar
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    Default Water Fiilter: Resin Change and TDS Meter

    Noticed over the last couple of weeks that if I left my filtered water to just dry without toweling off there would be mineral/water marks on the glass. Decided it was time to change the resin so bought 7lt bag from MoreThanPolish and while I was at it I bought a water testing meter off eBay for 7.50 delivered (curiously gone up to 30 now???!!!! However if you put "tds" in eBay search loads come up which are cheaper).


    As a control sample I just used water out the tap to see what that was and it showed 280ppm (parts per million)

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    Next I tried water out the failing filter which should 251ppm so not much better than my tap water

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    Top of the filter just unscrews

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    Yiu can just about make out the resin inside so drained the water out and poured the resin into a bin bag. It has the consistancy of a kids "slush" drink

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    Hers the new resin - bit of pain to put in as its "dry" - bit like sand

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    So after reassembly I retested and was quite surprised to see that it really was giving 0ppm water. TBH I was expecting say 10, 20ppm not 0 so quite impressed.

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    Still not convinced I added some ordinary tap water to "pollute" the filtered water just to make sure my meter wasn't misbehaving and as you can see it went up to 90ppm.

    Very pleased :-)

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  2. #2
    Mike01606's Avatar
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    Default Water Fiilter: Resin Change and TDS Meter

    Jeff,

    It would be interesting to see how long it lasts.
    The resin exchange de-I systems we use at work regenerate several times a day although they do a bit more work than wash the odd car!.......
    The resin itself is only replaced annually though.

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    Nosevi's Avatar
    Nosevi is offline There's an outside too? Where? Super Moderator
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    Thanks Jeff. Think I'll be buying a filter from Mark in the near future (as well as a tester - didn't know such a gadget existed!) I bought another brand, think it was before Mark started selling his, and to be honest it's not particularly good. Looks more Gucci than Marks but no way has it ever got the ppm anywhere close to down to zero and I've always had at least minor water marks.

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    Jeff, you really are incurable inquisitor! I love the way you document all your discoveries. Because of you, I have bought a raceglaze de-ionizer and now a TDS meter (a fiver on Amazon!) to go with it, as well as a 348 to wash with it!!!!!!

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    irarref's Avatar
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    LOL

    Get yourself some demon shine too and a watering can and youll never have to towel dry your car again even when its sunny :-)

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    Demon shine?? Surely that's for the saxo gang?? I thought maranellos finest deserved something more exotic like dodo juice?😃

  7. #7
    irarref's Avatar
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    Its a rinse aid....and a very good one too :-)

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    Three quick questions Jeff,

    1. Do you loose much water pressure through the filter?

    (I live half way up a rare thing in these parts called a hill, our water pressure is pitiful I can barely squirt our hosepipe over the top of m'Pickup truck)

    2. Are you going to attempt the regenerate the old filter medium?

    (I would have thought its only O'Level chemistry to "wash" it in some solution that reverses the ionic process..... )

    3. Is there an additional particulate filter in that black bit at the top?

    Got caught out by a sudden rain shower washing my car yesterday - my examination of the sky beforehand didnt give any clues, but the distilled water from the sky did an excellant job so am considering "harvesting" for car washing purposes.

  9. #9
    irarref's Avatar
    irarref is offline Nowhere to put the shopping -The Ferrari F40 Club Member
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    No, no and no! Lol

    I don't think they are suitable for running a pressure washer off if that's what your thinking. I use ordinary tal water for washing and rinsing then just an extra final rinse with the filtered water to prevent water marks. Too expensive otherwise (and no benefit anyway)

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    Quote Originally Posted by irarref View Post
    No, no and no! Lol

    I don't think they are suitable for running a pressure washer off if that's what your thinking. I use ordinary tal water for washing and rinsing then just an extra final rinse with the filtered water to prevent water marks. Too expensive otherwise (and no benefit anyway)
    Thanks,

    No wasnt considering running a pressure washer (for power, only using it as pump given any harvesting butt would be 1.0m+ below the drive, and hence 3.0m+ below the roof of my truck), just using that as an illustration about our very poor water pressure.
    And yeah, I'd only plan to do final rinse with it.

    But I bet the gel can be "washed" with something to regenerate it. As GCSE's are now over, eldest will have cleared her mind of such, but am sure I could ask the younger kids.

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