RE: QA/QC Question, Recording Temps

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From:"Sebree Linda A." <>
To:"'Victor A. Tobias'" <>
Date:Fri, 10 Sep 1999 08:02:38 -0500


We record temp's for our drying ovens, refrigerator, freezer and H20 bath
used for HIER on a daily basis.  Our refrigerator is also on an alarm system
hooked into a computer in plant engineering that is monitored 24 hours/day.
We have been told that we will need to find a way to hook up a temperature
monitoring device that will keep a constant record of our refrigerator and
freezer temps so that we know if there is a problem over weekends or
holidays when the lab is closed.  We do not record our flotation station
(for floating sections) temperature at all.  It has an LED readout but we
adjust the temp not based on what the readout displays but rather how
sections are "behaving" when floated.  Based on that criteria, we feel that
its unnecessary to record the temperature.  We don't process tissue in our
lab, but in previous labs I've worked in, the temps of the procesing
reagents were recorded daily as well.

Linda A. Sebree, HT
University of Wisconsin Hospital & Clinics
Immunohistochemistry/In Situ Hybridization Laboratory
600 Highland Avenue
Madison, WI  53792-2472

FAX: (608)263-1568

> -----Original Message-----
> From:	Victor A. Tobias []
> Sent:	Thursday, September 09, 1999 5:44 PM
> To:
> Subject:	QA/QC Question, Recording Temps
> We have an accreditation inspection coming up in the year 2000. We are
> updating all procedures. For recording temperatures, what is the standard
> as to frequency. My director thought for example, that for a drying oven
> once a week should be acceptable. I realize that to CYA, it is probably
> better to do it daily, but I would like other opinions. What about water
> baths for floating sections, are temps recorded regularly? If anyone has
> written guidelines that they are willing to share, it would be
> appreciated.
> Victor Tobias
> Manager Tissue Processing Lab
> Washington Animal Disease Diagnostic Lab
> Washington State University
> Pullman Washington 99164-7034
> (509) 335-5590
> (509) 335-7424 fax

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