I'm fermenting a Centennial IPA in a 6.5 gallon bucket (no spigot) and yesterday was my 7-day mark. When I removed the lid, there was a 1.5 inch layer of "foam" (not sure of the term...but I'm sure there is one) on top of the beer which I had to navigate my way through to remove a sample. I used an auto-siphon to remove my specific gravity sample, but no matter how careful I was, I still managed to remove some trub (or "solid" material) along with the beer.
Couple questions...
1) What are my alternatives to using the auto-siphon to remove the sample?
2) How concerned should I be with the solid trub material affecting my S.G. reading?
I'm fairly sure (if I recall freshman chemistry) the additional solids will positively bias my density reading...if so, how do I get around that?
My S.G. reading at seven days was 1.025(6) and my target F.G. is 1.012(4). O.G. was around 1.07.
Thanks!
southsidebrewer
Couple questions...
1) What are my alternatives to using the auto-siphon to remove the sample?
2) How concerned should I be with the solid trub material affecting my S.G. reading?
I'm fairly sure (if I recall freshman chemistry) the additional solids will positively bias my density reading...if so, how do I get around that?
My S.G. reading at seven days was 1.025(6) and my target F.G. is 1.012(4). O.G. was around 1.07.
Thanks!
southsidebrewer