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--------------9E20AA774C4DA64EE223CD99 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit --------------9E20AA774C4DA64EE223CD99 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> <body bgcolor="#FFFFFF"> <p>"George P. Wentland" wrote: <blockquote TYPE=CITE><style></style> <blockquote style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px"> <br>Liability! Profitability! 1. If a business does not of significant demand for a product they will not produce it. If a shop has 2-3 Certified Trimix divers that frequent the establishment, it is not worthwhile to make the investment in supplies and training to properly service this minority. 2. Lets take a look at liability. A diver makes a dive on a 15/53 refill to 300 feet, he makes a mistake and doesn't come up. Later it's discovered, after laboratory analysis, that the mix was really 15/48. Narcosis may have been a contributing factor to his death. Can you see the possible law suit? While Oxygen % can be readily measured, equipment to measure Helium % is cost prohibitive and not readily available to the dive industry. If you say cost bedamned see paragraph 1. Good Diving by George <br> <br> <br> <p>However, on that same note, if you are in an area you know there are no shops to cater to your demand for trimix, then shouldn't you seek out the information and knowledge to make your own. Mixing and blending is not at all difficult. It is, however, a meticulous chore and denotes a fine attention to detail. As for helium analyzation, here, at least, in the Bay Area the gas suppliers usually have analyzers that you can use when you purchase the gas. Why not use them. They are way too expensive to buy and as for narcosis being a cause for DCS. .05% should not be the major factor in that, especially with the differences in the compressibility of the gasses you are mixing. But, seriously, how often do you really think that the percentages of inert gases are exact in the mixes you dive? <br>Nitrox is much easier than Trimix as far as blending is concerned. <p>See you down under!</blockquote> </blockquote> </body> </html> --------------9E20AA774C4DA64EE223CD99-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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