[Histonet] Tissue Tek Cryostat

[anitathorn <@t> comcast.net]

Karen,
I have an old Tissue Tek II as the "back-up" cryostat.  I monitor its temperature everyday and found that the temperature I have it set at and the actual temp varies considerably.  I had our bio-med guy look at it and he said that there really isn't any thing he could do about it. So I watch it closely.  I noticed that as frost starts to build up, the tempreature goes up.  I know it's time to defrost it when the temp gets out of range.  Once newly defrosted, it goes back to the colder end of the range.  I have a seperate thermometer inside the chamber to get an acurate reading for my QA log.  I do have a manual (copyright 1966!!) and it doen't say anything about setting the temperature.
Hope this helps,
Anita
------- Original message -------------- 
From: "Heckford, Karen - SMMC-SF" <Karen.Heckford <@t> CHW.edu> 

> Good Morning Everyone, We have a old Tissue Tek 11 4553 cryostat. We 
> noticed after defrosting it that the temperature went way cold. We turned 
> the dial which moves the black hand and set it for -25 and noticed that the 
> blue hand is way past -30. We cannot find the users guide to save our 
> lives. Probably lost a long time ago. Anyways can anyone tell me how to 
> reset this thing. 
> Cheers, 
> 
> Karen Heckford HT (ASCP) CE 
> Lead Histology Technician 
> Histology/Pathology Department 
> St. Mary's Medical Center 
> 450 Stanyan St. 
> San Francisco, Ca. 94117 
> 415-668-1000 ext. 6167 
> Fax: 415-750-8123 
> email: kheckfor <@t> chw.edu