10 Jun
2007
10 Jun
'07
1:58 p.m.
jd wrote:
[snip]
IIRC, helium costs less than argon. There's something else about argon that
makes it undesireable as an inert gas except for welding. What that is I do not
know.
I hear now that argon now costs less. Have yet to see a price list. (Hello? Air
Products?)
Not too long ago a 5ft cylinder of 99.995% helium @ 3600psi costs $75.00 plus
whatever deposit and demurrage, and the same cylinder of 99.95% argon @ around
1200psi cost around $100.00. There's much more helium in the cylinder than argon.
I'm sure nitrogen was more expensive. I remember thinking that it was odd that
common nitrogen was so much more expensive than helium.
Sure wish I could find the real price lists. They're somewhere down in the
Jurassic stratum of this "library" of mine.
==
jd
Confidence is the feeling you have before you understand the
situation.