Label tubing for particular uses?
I recently had to repurpose the tube I normally use to run off wort from my kettle into the fermentor as a blowoff tube instead. I'm planning on getting a new tube to use for running off the wort in the future, because it doesn't seem like a good idea to run chilled wort through even a thoroughly cleaned blowoff tube.
How can I label these tubes of similar diameter and length so I can keep using them for the same purpose from batch to batch? Solutions that will survive sanitizing and cleaning are strongly preferred.