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Date: Mon, 4 Nov 1996 11:46:17 -0500 (EST)
From: Roderick Farb <rfarb@EM*.UN*.ED*>
To: Richard Pyle <deepreef@bi*.bi*.ha*.or*>
cc: Peter Heseltine <heseltin@hs*.us*.ed*>, "Mr. Dude" <heyydude@pi*.co*>,
techdiver@terra.net
Subject: Re: CO2

Regarding the question, why the Navy reports that scrubber life is less at
depth. How's this: The deeper you dive, the more compressed your body
becomes, the tissue bed becomes less saturated with blood leading to an
acidotic condition with an increased lactic acid production. Cardiac
output increases to compensate for less blood in the tissues, metabolic
rate goes up, the increased lactate is metabolized in the liver to CO2,
the excess CO2 results in scrubber being depleted sooner than it would be
at shallow depth. Here's a question: Is a cannister of scrubber that is
dived one time for eight hours depleted to the same extent as the
cannister that is dived eight times for one hour? Rod

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