There SHOULD be a symbol on the bottom of the bottle. The symbols can be quite variable, with numbers, letters, or combinations. Here is a link that gives a pretty good reference.
http://en.wikipedia.org/
Thank you,
David Kulcinski Orange, CA USA
________________________________ From: George Hollenberg <ghollmd@gmail.com> To: Classic Rendezvous <classicrendezvous@bikelist.org> Sent: Sun, May 23, 2010 8:12:17 PM Subject: [CR] ALE Water Bottle Material
Question#1: What material was used to manufacture ALE bottles? It's a white plastic-was it polypropylene? Question#2: What can be used to glue this material?
-- George
George Hollenberg MD
CT, USA