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>After taking advice from people on this list, I went ahead and pumped argon
>through my compressor. I ran the argon into a green garbage bag (color
>might be important), then into my nitrox stick. I measured the o2 level
>until it was 0, then started pumping into my HP tanks. I now have two HP
>120's full of argon. I can fill lots of argon bottles using these two
>tanks as two banks. When one gets too low to use, I rent another 130 cu.
>ft. argon cylinder, top up both tanks, and start over. I now have
>reliable, easy, portable argon fills to 3000 psi.
The argon tank I use underwater is an old B size oxygen tank, about 6
cubic foot.
I left it oxygen green to annoy those with label fetishes. One of my pet
fantasies is about someone actually being stupid enough to try to breathe
off of it underwater, while I time them to see how long they last.
I also have an old steel 72 that the welding shop charges me $18 to fill
(by transfill) up to around 2000 lbs. Since the Oxy bottle is low
pressure, I can (and have) transfilled off of it for 8 or 9 dives in a
row.
The B size is, in my estimation, a perfect size for argon. It's big
enough for a single deep dive, and small enough that the 72 will fill it
to 1000 lbs. (which is plenty for a deep dive) several times.
It works out to about $2 a dive. (As opposed to the $1 a FOOT that dive
stores charge.)
A 120, filled to 3500 with argon, would last me well into next year, but
I can't afford it.
------------
"C'mon, you sons of bitches, you
want to live forever?"
-First Sergeant Dan Daly, 1918
------------
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