I have a 20ml test-e 250 vial with some floaters. I was under an especially bright light in the bathroom today and something in the vial caught my eye. It looks like 3 free-floating pieces. It's hard to get a good picture of them. I think only 2 of them are visible in the pictures. The largest one looks a lot like a short hair, but I can't quite tell.
I used it a few times in the last weeks and actually had some of the worst PIP I have ever had after one of the injections. Admittedly it was not nearly as bad as what others report about their PIP experiences, but for me ~3 days of an extremely sore VG is very unusual. This could have been a coincidence since all the injections from this vial have been pretty painless.