Possible infection?

[cossacks19]

Found this a few days ago, any ideas? I used Kolsch ale yeast and fermented for about 2 weeks 4 days. Then I found the little round thing you see. After finding I cold crashed for 3 days. The picture is right before kegging it tonight, am taken from looking down the neck of the carboy.

Besides the circle (smaller than a pea) you see there was other little small things floating. After racking there was some film on the sides of the carboy.

I brewed another different batch using different yeast, which I also racked tonight and everything looks fine. Any ideas if this is a infection? If yes what type? And should I be worried for future batches?

 

[rgontasz]

Did you taste a sample? How did it taste? If it tasted fine, your good to go! This seems obvious, but I have had similar issues and they turned out fine. I wouldn't be worried about the small stuff floating as long as their wasn't a pellicle (kind of powdery skin) which could possibly be lacto infection. If it tastes good, who cares (but make sure your equipment isn't infected)

 

[cossacks19]

At first I thought it tasted a little off but then after trying again it seemed fine. I think it was my mind playing tricks on me. I couldn't see a powdery skin on the top for sure. But there was a little something on the side of the carboy after racking. Which I have a picture of if it will help.