[Nhcoll-l] Precipitate or Mold in Ethanol Stored Specimens

[Alex Krohn]

Hi everyone,

I recently found some bizzare white granules in some our ethanol preserved
specimens. See the attached photos. The white granules tend to stick to the
items in the jar, rather than rest at the bottom of the jar. They do not
crush easily (like I imagine precipitates would), but instead squish more
like tiny styrofoam bits or pieces (like I imagine mold would).

Has anyone seen this before? I washed the specimens and jars in fresh 70%
EtOH, and then replaced the EtOH in the jar. So far no new granules have
appeared. If anyone has any better ideas of what this might be or how to
treat it, I'm very interested.

Thank you!

Alex Krohn

---------------------
Assistant Director
Kenneth S. Norris Center for Natural History
University of California, Santa Cruz

https://norriscenter.ucsc.edu/
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