[Histonet] frozen sample cassettes

[Lemke, Nancy]

Greetings Histofolk!
I have run out of a cassette that I use for storage of frozen rodent brains.  It is about the general dimensions of a routine processing cassette but has a screw cap that seals the sample into a round storage area which has no openings other than the screw off lid..  There is an angled edge for labeling and the plastic almost looks like Nalgene opaque plastic.  I use these for storage in -80 and they are perfect but I have not been able to find them again after many, many years.  I believe they were from a start-up company years ago so they might not be available any more.
Any thoughts?
Thanks,
Nancy W Lemke BA, HT(ASCP)HTL
Research Coordinator
Hermelin Brain Tumor Center
Neurosurgery Research
Henry Ford Hospital
Detroit, MI
P:(313) 916-8648
F:(313) 916-9855

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