browndog
Are you bulletproof boy?
- Joined
- 23/9/03
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I did a brew on Sunday morning and as I am trying to work out the efficiency of my set up took plenty of notes and came up with this strange discrepancy. Using Brewsmiths instructions for a 21L batch (in the fermenter) I followed the sparging instructions to the letter and according to my dipstick ended up with the exact number of litres in the kettle, that being 29L. My SG was 1.054, 3 points higher than the 1.051 estimated.
I thought this is great things are going well. I loose 4L per hour boil off based on the last few brews, 3L to trub and allowing for 1L shirnkage, this should see 21L in the fermenter. After cooling the wort I found there was 24L in the kettle and sure enough ended up with 20L in the fermenter. I drained the kettle and found there to be 3L left over.
The only thing I can come up with this that when I made my dipstick I used cold water and when I took the preboil volume the wort while not being boiling, was still hot and showing more than it should on the dip stick. That, or I actually lost 5L in the boil off. Should I recalibrate my dipstick to 70C water ?
cheers
Browndog
I thought this is great things are going well. I loose 4L per hour boil off based on the last few brews, 3L to trub and allowing for 1L shirnkage, this should see 21L in the fermenter. After cooling the wort I found there was 24L in the kettle and sure enough ended up with 20L in the fermenter. I drained the kettle and found there to be 3L left over.
The only thing I can come up with this that when I made my dipstick I used cold water and when I took the preboil volume the wort while not being boiling, was still hot and showing more than it should on the dip stick. That, or I actually lost 5L in the boil off. Should I recalibrate my dipstick to 70C water ?
cheers
Browndog