From:"Bonner, Janet"

     We also use the warm chucks.  Without exception, the OCT chunks off the chuck when the chuck is pre-cooled.  We have chucks of all ages and stages of use.  We only use the large chucks and clean them in a virex soak and a wire brush.  Both of these last specifications may be factors! 
     For those of you who precool your chucks, what size/type of chuck are you using and what do you clean them with?  The chucks come out so much neater if the chuck is cooler before the OCT is applied!
                             Thank you!    Janet 


From: on behalf of Matt Bancroft
Sent: Tue 10/9/2007 11:52 AM
To: Sebree Linda A.;;

I am a manger of a mohs lab, I use room temp molds to keep the OCT from popping off the chuck.
  Matt Bancroft HT (ASCP)

"Sebree Linda A."  wrote:

I was always taught to apply the OCT to a RT chuck, put in the cryostat
and when you start to see the OCT turn white, i.e. the OCT in the
grooves is starting to freeze, add the tissue and weight down with the
cold heat extractor.

Linda Sebree, HT(ASCP)
University of Wisconsin Hospital & Clinics
IHC/ISH Laboratory
600 Highland Ave.
Madison, WI 53792
FAX: (608)262-7174

-----Original Message-----
[] On Behalf Of
Sent: Tuesday, October 09, 2007 9:40 AM


I am looking for some help. The O.C.T. embedded tissue is falling of
chuck when we try to section. Does anyone have any ideas to stop this?
have tried new O.C.T., cleaning chucks, advancing slower. Please help.
Thanks Marcy

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