Infection or just trub?

[deeve007]

So I did a split boil with my current 20L batch, one yesterday and put it into HIGHLY sanitised fermenter to cool overnight ("no-chill" method). Pouring it into the fermenter I used the cleaned & HIGHLY santised grain bag to filter out as much trub as I could, but noticed the below in the beer today (I moved the fermenter a little so probably at bottom initially).

Is this just trub that still got through the grain bag filter, or is it infected?

 

[OnePlate]

Trub.

 

[deeve007]

Thanks. It just looked a little different than previous trub so wasn't sure.

 

[RPh_Guy]

You don't need to remove the trub. It's not something to obsess over.

Filtering trub is highly ineffective, and a complete waste of effort and contamination risk.

You could leave the wort in the kettle. After sitting overnight, all the trub will settle so all you need to do is rack the clear wort if you don't want trub.

It's not possible to detect a contamination by looking at trub. The only visual sign of a contamination is a pellicle on the surface, which only some microbes form, and which they will only form in the presence of (too much) oxygen in the headspace.

Hope this helps. Cheers

 

[deeve007]

Yep, loads, thanks!