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test kit test tube: amonia test residue...

Discussion in 'General Freshwater' started by mellowvision, Jun 24, 2007.

  1. mellowvision

    mellowvision
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    Seafood Lover

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    Bill Brissette
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    seems like no matter how much I wash out my test tubes, the amonia test doesn't seem to completely wash out... and the next time I dip it in the tank for a sample, the sample is slightly yellow, before I even add drops. Is there some trick to this?

    how do you wash your test equipment, and how often?
     
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  2. Weezer

    Weezer
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    I just rinse the tubes out several times, then let them dry upside down on a piece of paper towel, after each use.....:)
     
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  3. mellowvision

    mellowvision
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    me too... and I realllly rinse them.. but the last 2 times I've had yellow residue. I am worried about it getting into the tank.
     
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  4. davexstumpe

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    this happens with my nitrite testtube

    i think i left it in there entirely too long and it just stained the glass a little. no biggie.
     
  5. mellowvision

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    I don't know if it really is no biggie... the bottles are clearly marked as corrosive... so when I dip the test tube to get a sample, it could be contaminating the water. this could be bad both for the fish, and if it were to give an inaccurate reading.
     
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  6. jac8724

    jac8724
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    I get this too but only when i leave it in for too long. It came off for me when i used a wet paper towel, rolled it up like a pencil, and stuffed it down in there and twisted it around. good as new :)
     
  7. Mgamer20o0

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    BobsTropicalPlants.com
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    i never put the tubes in the water. i get water from the tank and put in the tubes. try some bleach or vinegar
     
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  8. Weezer

    Weezer
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    I use a 5 ml syringe i purchased at the drug store, perfect measurements every time.....:)
     
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    #8 Weezer, Jun 25, 2007
    Last edited: Jun 25, 2007
  9. Weezer

    Weezer
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    Plastic Plant's Live Longer

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    Like this........:idea:

    IMG_0892.jpg
     
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  10. mellowvision

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    cool. I have some of those around, I just need to find them!
     
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