Ob's brewing 101

Great Thread!

I Prefer to use Buchner funnel with buchner flask, more cheap, then filter units.
And a Magnetic stirrer with hot plate, make more easy.

Maybe someone can help me, my filtered at PTFE .22 TrenAce, turning cloudy after some hours, Anyone know why?
When i filter again second time, it become crystal clear... didn't turn cloudy anymore.

 
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