"Daniel J. Stern" > wrote in message
n.umich.edu...
> On Sat, 16 Jul 2005, Bill wrote:
>
>> For what its worth, R13 was (and may still be ) used in vapor traps for
>> vacume systems typicaly found in laboratories (freeze dryers, etc). The
>> idea being to remove moisture before it gets to the vacume pump-- some
>> cascade systems got to around -120 C as I recall (I serviced these units
>> about 20 years ago and as I am an old fart, my memory is not too good
>> anymore---I believe the refrigerant I used was actualy called R13B1)
>
> Grand, but you really have to watch those suffixes. There are refrigerants
> with the same number but different suffixes ("a" vs "A" vs "B" etc.) that
> aren't the same thing.
>
> And no car ever made has ever used R13-anysuffix.

Which obviously differs from your original statement "There is no such
thing as R13".