Here are some photos of the glassy brown bits I found on the filter, along with the soft rubbery tan piece. There's also a red fleck I found. These are most of the large pieces, there are some small flakes of brown plastic on the filter I didn't collect.
I'm going to Charles Navarro's seminar next weekend so I will take these samples with me and get his opinion.
Scale is in inches, I didn't have a metric ruler.
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