mojjax said:I'm not sure what the gunk is , but the container looks like a "blank" for a 1 liter soda bottle . Here is one that a friend who worked in a bottling plant gave me a few years ago , it's for 7-UP .
you are thinking of a vacutainer. If it is one the cap has a hole with a rubber insert that a needle punctures.steif said:Well, I hate to say it and am probably wrong, but that looks exactly like the tube they draw blood in when I get a blood test at the doctors... even the cap is the same. it has a whitish liquid in it that preserves the blood that they draw, at least that is what they told me once when I asked what was in it.. so it could be... but I would hope not. probably a good thing to leave it where it was.