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Thread: Haze on glasses from dishwasher

  1. #1
    Senior Member bae's Avatar
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    Haze on glasses from dishwasher

    My old dishwasher finally gave up the ghost. After some trouble, a new dishwasher was procured and installed.

    It works fine, except after some months of use, a hazy buildup is accumulating on my clear glassware. It's a film of some sort, I can scrape it off with a fingernail and some effort.

    Our water here is a bit hard, but not terribly so.

    Q1: Any ideas for removing this haze from the glasses?
    Q2: Any ideas how to prevent it in the future?

    We're using the same detergent we used to use, and the Jet Dry voodoo stuff as we used to.

  2. #2
    Simpleton Alan's Avatar
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    I don't have any idea how to eliminate this at the source, but we have had some success by adding a cup of vinegar in the final rinse.
    "Things should be made as simple as possible, but not one bit simpler." ~ Albert Einstein

  3. #3
    Senior Member bae's Avatar
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    As a test, I just soaked a glass in a weak solution of water and vinegar. It started bubbling almost immediately, and after 45 mins, the glass is completely clear. Score.

  4. #4
    Simpleton Alan's Avatar
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    "Things should be made as simple as possible, but not one bit simpler." ~ Albert Einstein

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    Senior Member Sad Eyed Lady's Avatar
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    This was happening to me at one time and I read that using too much detergent can cause this. I use less now and have had no problem since.

  6. #6
    Low Tech grunt iris lily's Avatar
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    ok you geniuses, I can't figure out what putting vinegar in the rinse means.

    Do ya mean I have to stand there and wait for the right time to do it? Then I open the door and throw vinegar inside?

    I knlow that vinegar works, my mom tuaght me to do a vinegar wash of my hair because it remoes the soap scum and makes everything sparkle. I just don't know how to apply it.

  7. #7
    Senior Member Rosemary's Avatar
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    Don't add vinegar if the dishwasher detergent contains bleach!

  8. #8
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    Quote Originally Posted by alan View Post
    I don't have any idea how to eliminate this at the source, but we have had some success by adding a cup of vinegar in the final rinse.
    Great tip, Alan! thanks...

  9. #9
    Simpleton Alan's Avatar
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    Quote Originally Posted by Iris lily View Post
    ok you geniuses, I can't figure out what putting vinegar in the rinse means.

    Do ya mean I have to stand there and wait for the right time to do it? Then I open the door and throw vinegar inside?
    Yeah, pretty much.
    "Things should be made as simple as possible, but not one bit simpler." ~ Albert Einstein

  10. #10
    Senior Member Anne Lee's Avatar
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    In the past year or so most dish detergents have removed phosphorous from their formulas due to legislation passed in several states. Apparently Proctor and Gambel et al did not want to have create different formulas for different markets. I've noticed the same haze on my glasses since that point. I don't know why phosphorous would help prevent scale build up - maybe because it attracted the lime molecule since P is a very sticky molecule? - but the two events are suspiciously close to my liking.

    The haze went away when we upgraded our water softener. Our water is extremely hard so softening really is a necessity or else eventually your appliances start to stain. We were using a $50 second hand softener. The new one was something like $600, so it's obvious the old one was on its way out, probably for quite a while.

    The vinegar trick will work too as hard water tends to be lime which is alkali.
    Formerly known as Blithe Morning II

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