Hello Everyone,
We have a Varian cold-probe on our 500 NMR installed back in 2003. Our cryobay was retrofitted with a Leybold Coolpower 10MD a few years back. We had many power outages on campus in the last two years and this had resulted in many cold-probe warm-ups and cool-downs. My question is this, for this generation of cold-probe, how fast can one cool down the cold-probe? Is there any possibility of performance degradation (i.e. longer pulse widths even after months of usage and hard burns) with a fast cool-down, say within 1 to 1.5 hr? If you have a similar system, how fast do you cool down your probe?
Sincerely,
Que Van
Que Van (Contractor)
Sr. Scientist
Laboratory of Proteomics and Analytical Technologies
http://atp.ncifcrf.gov
SAIC-Frederick, Inc.
National Cancer Institute at Frederick
Post Office Box B
Frederick, MD 21702
Phone: 301-846-7192
Fax: 301-846-6037
vanq_at_mail.nih.gov
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Received on Fri Apr 01 2011 - 03:47:31 MST