How do you clean out a camelbak tube?

What type of plastic is used to make the Camelbak drink tube?

• Answer:

  I assume you are referring to the flexible tube itself, and not the Camelbak bottle.  Based on a quick search, I couldn't find any specific details for Camelbak's drinking tube, but I would assume it's some form of polyethylene--the plastic is common, flexible, and has a variety of other uses. As for the Camelbak bottle itself, the new, BPA-free ones contain a proprietary copolymer (copolyester) called Tritan, manufactured by Eastman.  The exact formula of the copolymer is not public, but Tritan is made of three components: 2,2,4,4-tetramethyl-1,3-cyclobutanediol (1), 1,4-cyclohexanedimethanol (2), and dimethyl terephthalate (3).  When compared to other plastics like PETE. Tritan is generally stronger, more thermal resistant, and does not give off questionable chemicals like BPA.