Sediment post bright tank

[jbehenna]

We have an IPA and a Pale ale that have recently started developing sediment after bottling. The sediment is not visible at the time of bottling and the bottles do not appear hazy at the time of bottling, but after a couple of days, when a bottle is agitated, the sediment is visible.


The beer is not filtered, but is centrifuged before entering the bright tank. The sediment appears in both warm and cold bottles and if the sediment is just dissolved into solution and is settling out, once it is settled, it doesn't dissolve back into solution like a haze, it remains chunky as in the attached picture.

It does not impart any real noticeable flavor to the beer and appears somewhat crystalline under the microscope.

Has anyone else experienced a similar issue and know what is happening? So far, it is only affecting our IPA and Pale.

[DrSuds]

Sediment

Are you using PVPP or any other processing aid in the FV's prior to packaging?

[jbehenna]

Sediment

Are you using PVPP or any other processing aid in the FV's prior to packaging?

We use a whirlfloc type precipitate (can't remember the brand name off the top of my head) in the kettle, but nothing in the FV or BT.

The odd part is the problem only recently appeared and doesn't seem to affect our other beers, so maybe an increase in kettle precipitate is needed.

[dberg]

It does not impart any real noticeable flavor to the beer and appears somewhat crystalline under the microscope.

Does it look like calcium oxalate?

[jbehenna]

Does it look like calcium oxalate?


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This is most likely the problem. We've change the dry hopping for these two beers around the time this problem arose so maybe the hop acids are pulling some calcium oxalate from the tank walls.

[scotts]

Out of curiosity, what was your old and new dry hoping schedule/procedure?