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Thread: Calcium hardness color question

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    Calcium hardness color question

    I was wondering if the addition of salt to a pool changes the degree of pink color you get after adding the R-011L reagent in testing for calcium hardness?

    The reason I ask is that I don't check it often (just because it rarely varies too much) and we have added a SWG since the last time I tested and now the water is just barely pink after adding the reagent. I tested 3 times on my own because I could just barely see color at all let alone a change and then I had the pool store test just to be sure I wasn't getting a faulty reading or having problems with reagents.

    Prior to adding SWG, I remember the water initially being bright pink. Since that's the only thing that has changes I was wondering if others had experienced this as well.
    12K IG gunite, Pentair Intelliflo pump and 1 hp Pentair booster pump, Posi-Clear Sta-rite cartridge filter, IntelliChlor SWG and EasyTouch system.

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    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: Calcium hardness color question

    The addition of salt, assuming it is sodium chloride, shouldn't have an effect on the color of your CH sample. How old is your R-0011L reagent and where do you keep your test kit when you aren't using it?

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    Re: Calcium hardness color question

    I'm glad to see someone else has the same problem. My kit is less then 1 year old (Taylor). Stored outside in a storage chest, in SoCal.
    18K Gals, Intelliflo VSD, Pentair Catridge, SWG, Solar & Gas Heat, Pebble Tec, Jandy AquaLinks, Pool Pal for Android.

  4. Back To Top    #4

    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: Calcium hardness color question

    R-0011L is one of those reagents that goes bad over time. This expiration process can be sped up by storing a kit in a place where it is subjected to temperature extremes. If you have noticed that the R-0011L is acting differently, replacing it would be advisable.

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    Re: Calcium hardness color question

    Thanks, will do.
    18K Gals, Intelliflo VSD, Pentair Catridge, SWG, Solar & Gas Heat, Pebble Tec, Jandy AquaLinks, Pool Pal for Android.

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    Join Date
    May 2007
    Location
    Montreal Canada
    Posts
    326

    Re: Calcium hardness color question

    What's the lot number on that reagent? Taylor has had a problem with lot 4064E.

  7. Back To Top    #7

    Re: Calcium hardness color question

    Thanks for the replies. I bought the reagents last May/June as part of the large TF-100 test kit, as such it doesn't appear that individual bottle has a lot number. I keep all the tests inside in cabinet so climate controlled. I will order some new R-011L and see if the problem goes away.
    12K IG gunite, Pentair Intelliflo pump and 1 hp Pentair booster pump, Posi-Clear Sta-rite cartridge filter, IntelliChlor SWG and EasyTouch system.

  8. Back To Top    #8

    Re: Calcium hardness color question

    BTW - my lot was 2043B.

    Are lots produced sequentially?
    18K Gals, Intelliflo VSD, Pentair Catridge, SWG, Solar & Gas Heat, Pebble Tec, Jandy AquaLinks, Pool Pal for Android.

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