is there zero Helium gas permeability membrane materials ?

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- WMGS
  
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posted
20 years ago

Tue, Oct 28, 2003 12:20 PM

Dear All ,

Is there zero Helium gas permeability membrane materials ?

Thanks in advance

WMGS

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- bob
  
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posted
20 years ago

Tue, Oct 28, 2003 7:20 PM

Use these search terms in google: membrane helium impermeable. Here are some of the things you'll find:

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(before%208-26-02)/99_p_073.pdf

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