Dear Ty and all others interested,

How long can hydrogen gas be stored in glass tubes without 
fractionation? What is more preferable: Pyrex, Vicor, Simax, or 
silica?

Cheers,
Attila
********************
Dr. Attila Demeny
Laboratory for Geochemical Research
Hungarian Academy of Sciences
Budapest, Budaorsi ut 45, H-1112, Hungary
tel/fax: 36-1-185-1781 or -319-3145
e-mail: [log in to unmask]