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Cleaning a thermos flask

I haven’t used my thermos for a while, so I washed it out carefully  with hot water and a cattle brush, then with bicarb and then plain hit water.  But my tea (plain black tea, no milk or sugar) tasted musty.  Any ideas on what to do with it (other than yell and chuck it at the wall)?

Comments

  • RobM99
    RobM99 Posts: 2,789 Forumite
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    Lemon juice might help - slightly acidic as we know.
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  • I'm surprised the bicarb didn't work - its usually very good.  However, OH and I have always found that tea in a flask never tastes nice when you come to pour it out, no matter what flask you use.  You would be better to fill the flask with boiling water and carry a tea-bag with you, and make it fresh when you need it, especially as you drink it black, and don't have to worry about the milk.
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  • Pollie
    Pollie Posts: 256 Forumite
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    Steradent tablet with warm water. Leave for a while and then rinse thoroughly.
  • GaleSF63
    GaleSF63 Posts: 1,555 Forumite
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    Mustard and hot water. 
  • Longwalker
    Longwalker Posts: 949 Forumite
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    Pollie said:
    Steradent tablet with warm water. Leave for a while and then rinse thoroughly.
    Seconded 
  • wort
    wort Posts: 2,075 Forumite
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    Milton or supermarket own brand sterilization liquid. I always used it for dh work flask, also use to clean teaspoons and cups of tea stains, great to clean vases too.
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  • YoungBlueEyes
    YoungBlueEyes Posts: 5,098 Forumite
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    I would try a denture tablet too. Possibly left longer...?
    You have the same number of hours in the day as Einstein had. Use them.
  • Nelliegrace
    Nelliegrace Posts: 1,276 Forumite
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    Oxyclean left to soak, then a good scrub with a bottle brush. It cleans teapots, tea strainers and the knitted tea cosy.
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  • Moorviews
    Moorviews Posts: 640 Forumite
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    I wasn’t clear from your post how long the bicarb was left in the flask. My own method involves a big teaspoon of bicarb in the bottom of the flask, fill with cold water and leave for a day or two before emptying and rinsing out. Repeat if needed. 
  • bouicca21
    bouicca21 Posts: 6,752 Forumite
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    Thanks all.  I think maybe my problem was not soaking the flask long enough - I literally just washed it out with bicarb.  So I will soak it in a bicarb solution for a day or two and see how it goes, before shopping for steradent or oxyclean.
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