ConstantlyAnxious
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- Nov 2, 2018
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After a few months in my basement, I noticed some of my homebrew bottles had stuff floating in them. I've divided the stuff into three categories. I would really appreciate somebody telling me what I'm looking at in each of these!
These bottles were new PET bottles. There was also a white mold (impossible to misidentify) growing on the outside of the bottles where I must have splashed some wort. I'm assuming this is unrelated unless PET is permeable to mold?
1. Ring around the top
Looks like beer has evaporated a little and left a ring of stuff around the top.
2. Floating on the surface
Couldn't get a good photo. Several bottles in the batch have small patches of stuff floating on the surface.
3. Around the inside of a ridge in the bottle
Every bottle in the batch has a strip of stuff attached to the inside of the bottle around a shallow ridge. Filaments extend from this strip in places into the beer and you can see them floating around as you move the bottle. You can also see in the photo some small bubbles nucleating around a matrix of particles that seem to be emanating from the strip. In some bottles a structure of fine wool-like strands spans almost the full height of the bottle and seems to be anchored to this part of the bottle.
These bottles were new PET bottles. There was also a white mold (impossible to misidentify) growing on the outside of the bottles where I must have splashed some wort. I'm assuming this is unrelated unless PET is permeable to mold?
1. Ring around the top
Looks like beer has evaporated a little and left a ring of stuff around the top.
2. Floating on the surface
Couldn't get a good photo. Several bottles in the batch have small patches of stuff floating on the surface.
3. Around the inside of a ridge in the bottle
Every bottle in the batch has a strip of stuff attached to the inside of the bottle around a shallow ridge. Filaments extend from this strip in places into the beer and you can see them floating around as you move the bottle. You can also see in the photo some small bubbles nucleating around a matrix of particles that seem to be emanating from the strip. In some bottles a structure of fine wool-like strands spans almost the full height of the bottle and seems to be anchored to this part of the bottle.