em_saenz profile image 80

What's the longest time you have kept helium in a balloon?


I was surprised to find a helium balloon I bought six months ago was still partially inflated!

 

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peachpurple profile image75

peachy (peachpurple) says

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2 years ago
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  • em_saenz profile image

    em_saenz 2 years ago

    I wonder if anyone can explain what is behind this?