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All oxygen is the same. Medical oxygen can be lower quality. Aircraft oxygen
is the next grade up. BUT welding oxygen is the highest quality.  It is all
produced by the fractional distillation of liquid air. NO WATER in any of
it.

Cy Galley
Editor, EAA Safety Programs
cgalley@qcbc.org or experimenter@eaa.org

LML website:   http://members.olsusa.com/mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair
Please remember that purchases from the Builders' Bookstore
assist with the management of the LML.

Please send your photos and drawings to marvkaye@olsusa.com.