X-Message-Number: 21232 From: randy <> Subject: liquid LN2 and the "fog" above it.... Date: Sat, 22 Feb 2003 18:36:46 -0600 References: <> John Bull wrote: >> My question to Charles is at what LN2 level are the cryostats maintained, what is the "normal" level you mention, (half full, quarter full,?) and since heat rises, what is the temperature in the area of the feet? And has there been an assessment of the degree of risk for allowing the feet, and I guess the lower torso also, being at a higher temperature than -196C? >> Interesting. I had alawys thought that the subject had to be below the liquid surface in order to get to -196 C. I recall from the Visser debacle, when dipped the rat heart into the LN2, doubters of her cryopreservative said that she never really dipped it into the LNS, but instead simply held the rat heart in the "fog" above the LN2.... also: >>>> Incidentally, in the current issue of The Immortalist, a fine publication, IMHO, there's a photo of the two capsules mentioned, along with a rather leggy Diane Henderson, Curtis's wife at the time. >>> I have never read that. Is it available on the Net? Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=21232