[Histonet] (no subject)

Marcum, Pamela A PAMarcum <@t> uams.edu
Mon Sep 9 08:50:06 CDT 2013

The last answer will cover most paraffins used routinely and may cover microwave also.  Temperatures below 58C are often melt points however; they may not be a complete liquid or have slightly increased viscosity.

Pam Marcum

-----Original Message-----
From: histonet-bounces <@t> lists.utsouthwestern.edu [mailto:histonet-bounces <@t> lists.utsouthwestern.edu] On Behalf Of Martin, Erin
Sent: Monday, September 09, 2013 8:28 AM
To: histonet
Cc: Naujokas, Agne; Meier, Melissa
Subject: [Histonet] (no subject)

Good morning all!

One of our fellows emailed me a question that she came across while studying for her boards:

"I'm studying for my board exam and came across questions re: paraffin embedding.
It reads: best temperature for paraffin embedding is
I am getting some info on Internet that says 58 but is the range lower or higher than that? What do we use?"

This seems to me to be an odd question because it depends on the melting point of the paraffin in use.  Ours melts at 58C and we embed at 60C, but we have also used paraffin that melts at 56C and we embedded at 58C.  Or am I missing something?  Does anyone have a clear cut answer to this?

Thanks everyone!


Erin Martin, Histology Supervisor

UCSF  Dermatopathology Service

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