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At 07:33 PM 12/6/2000 -0800, Brian Hunter wrote: > When buying o2 for mixing at home is it necessary to buy medical grade or can you use welding grade? I have heard you can use welding grade as long as the purity is good, I use Aviator's Oxygen in my mix as well as in my airplane. It's only slightly more expensive than welding, at least from my supplier. >and also what grade of helium should I buy? Any help would be greatful. I use Ultra High Purity (UHP). It's normally used in gas chromatography; I figure anything good enough for a chromatograph to breathe is good enough for me. Also, my supplier's price for the lesser grades is only a few dollars per cylinder, so UHP makes the most sense for me. Note: your millage may vary. -Mike Rodriguez <mikey@mi*.ne*> http://www.mikey.net/aue Pn(x) = (1/(2^n)n!)[d/dx]^n(x^2 - 1)^n -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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