On Sat, 14 Aug 2004 18:24:14 +0100, John Woodgate wrote:

I read in sci.electronics.design that Keith wrote (in
) about 'Error in textbook?',
on Sat, 14 Aug 2004:

Unfortunately, boiling the CFC also distilled it, leaving any
contamination on the chips.

Sulfur hexafluoride might have been better, but it's probably more
costly than CFCs were.

Cost? Dunno. I do know that we were paying $50/qt (IIRC) for the stuff
in '75. I wouldn't think a sulfur/fluoride brew could be made any
"cleaner" than CFCs. THe problem was the contaminants.

--
Keith