[PSUBS-MAILIST] Commercial Grade O2 vs. Medical

[Alec Smyth via Personal_Submersibles]

Hi Steve,

I've had the same experience as Hank. You buy a tank, but each time you
refill it you turn it in and are given a different one. I really don't see
this as a problem, in fact I like it because the gas company takes care of
tank inspections and maintenance. If you wanted extra security, I would
suggest checking the contents of each tank with a gas analyzer rather than
trying to always use the same tank. It really doesn't matter which tank it
is, just what's inside.

Best,
Alec

On Wed, Jan 3, 2018 at 1:10 PM, Steve McQueen via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> I tried to search the archives but it wasn't very friendly.  Sorry to
> again ask about something I know has probably been discussed.
>
> I wanted to double ck. my O2 strategy.  After some investigation it seems
> I will buy a new steel high pressure oxygen tank for external mounting. My
> plan is to have it refilled with "commercial grade" O2 vs. medical grade
> 02.  As long as I keep my "personal" tank and not allow the filler to swap
> tanks I should create a "chain of custody" that will help me feel good
> about not having contamination.
>
> I am wondering how others are managing.
>
> Thanks,
> Steve
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