Here's another hangover from my editing days -- I get all kinds of white papers. This one might be useful to some folks. It tells you what kind of tubing to use with what liquids and environments. You have to request it, but they only ask for an email address:

http://www.newageindustries.com/whitepaper-request.asp

Otherwise, until the bluefish stop running, I'm outta here.

--
Ed Huntress