I brewed my very first batch almost 4 weeks ago. I currently have my beer in a secondary fermenter (glass carboy) and plan on bottling in a couple days. I dry hopped it late last week. Today I got home from work and noticed that my hop bag had floated to the top (initially it sank and this is the first I've seen it since I dry hopped it). I had a large bucket of star san with my aeration wand about 75% submerged. i.e., 25% of the wand was above the water line and thus not sanitized. The star san is only about a week old. I took off the carboy stopper and used the wand in an effort to push it down to see if I could get it to stay at the bottom (I know, really dumb idea). After realizing quickly that this wasn't going to work, I pulled the wand out and dropped it back in the bucket. Once I did this I saw that there was liquid on the wand above the water line. Meaning, I realized that I dipped the wand just a little bit too far into my beer. Roughly 1/2 an inch of the non-sanitized part of the wand must have been in the beer for maybe 10 seconds.
Did I just turn my first brew into vinegar?