[3dem] apertures, cryo-cycles

[Reinhard Rachel]

Heather, 
We start the so-called cryo-cycles every evening / night on those TEM's where this is possible (CM12; 2100-F, new). It is just routine now, it takes less than half a minute to start. Really necessary or not, I don't know; but I only see advantages, no disadvantages. We have hardly any problems with the vacuum or apertures since almost 20 years (on the CM12). 
regards,
Reinhard

-- 
Prof. Dr. Reinhard Rachel
University of Regensburg
Centre for EM / Anatomy
Faculty of Biology & Preclin. Med.
Universitaetsstrasse 31
D-93053 Regensburg - Germany
tel +49 941 943 2837, 1720
fax +49 941 943 2868
mail reinhard.rachel at biologie.uni-regensburg.de
office: VKL 3.1.29 
 
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