Sparging question

[carl_saint]

Hi, I'm about the start brewing from grain and understand most of the principals.
When checking the gravity of your runnings whilst sparging, do you check at the sparge temp? Won't this give an inaccurate reading?

 

[cnelsonplumber]

Hi

Welcome to the dark side :

Have a look at This I use it as an excellent reference.

Basically if you sparge down to .990 it is a temperature corrected value of 1.008

Interestingly if you run this figure through the Calculator it works out to .983 although it does depend on calibration temperatures of different hydrometers.

Hope this helps

 

[carl_saint]

That makes sense, cheers! Getting the first one on in a couple of weeks when I get back off hol!

 

[cnelsonplumber]

Good luck and have a great hol. :thumb:

 

[Mark1964]

We generally take samples in a trial jar throughout the sparge and cool down to 20 deg c but now just check at the end of the sparge

 

[zgoda]

With the water amounts properly measured, there's no need to check runnings gravity, only wort gravity before boil. Which I often forget to do.