I am having a problem with my gravities. my preboil gravities are about half a degree higher then my knock out gravities. anyone have a idea why?
Announcement
Collapse
No announcement yet.
higher Preboil gravity
Collapse
X
-
You either have a measurement problem (cooling to the correct hydrometer calibration temp? cracked hydrometer?) or you are adding water to the wort.
One source of water being added to the wort is in your HX. Could be leaking from cold side to wort through a bad gasket.
Where are you measuring knock-out gravity? From the kettle or after the HX?Andrew Godley
Parish Brewing Co.
Broussard, Louisiana
Comment
-
I've found that highly aerated wort taken from the fermenter can sometimes give a lower than actual hydrometer reading. The air bubbles traveling up around the hydrometer can create a lower density immediately around the hydrometer. You may want to pull a sample from the kettle at the end of the boil and compare it to a sample from the fermenter.
Comment
-
How are you pulling the kettle sample? If it isn't covered while cooling you could be seeing an increase in gravity due to evaporation.Sent from my Microsoft Bob
Beer is like porn. You can buy it, but it's more fun to make your own.
seanterrill.com/category/brewing | twomilebrewing.com
Comment
-
I have expereince of a couple of breweries where the heater elents / burners are part way up the kettle walls and know that the bottom never gets thoroughly mixed in until later in the boil, if ever. Manual mixing or recirc from the hot middle region to the bottom, at least until fully up to boiling point might be the only answerdick
Comment
-
I have experienced the same issue. I've drawn a sample from the surface the whirlpool port and the bottom of the kettle and had all different readings. I think mixing is the answer as well but it still isn't always the same for me. Where do most people draw the pre-boil sample from? Also, I was wondering what most people go for a difference. I boil off about 1 degree Plato.
Thanks,
Tim
Comment
Comment