You will have increased the density by a factor of roughly 7 (I didn't bother
to do the arithmetic).  For practical purposes, you can compress to whatever
extent your pump can provide and/or whatever pressure your tank can safely hold
(with enough pressure and low enough temperature, you can also liquify the
air).  Why do you want to increase the density?  Please be cautious -- high
pressure can be extremely dangerous, just as high oxygen content can be.

Jim

John Pearson wrote:

> If I compressed air at 70 degrees F into a bottle and obtained 100psi with
> the air temp at 40 degrees F, will I have doubled the oxy/nitro density of
> the air. What kind of compression ratios am I capable of?
>
> Thanks
>

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