A few further notes on the employment of argon for suit inflation/insulation augmentation. A dry suit should ry suit should be inflated and purged at least 2 and preferably 5 times on the surface to remove all air for total effectiveness. DUI makes a "suit sucker" that power evacuates the suit when placed over the over the exhaust valve that minimizes the number of purges necessary. A larger tank on the surface can be used on the surface to supply argon for the purge, no since wasting your u/w argon. It is debated the actual effectiveness of argon as an insulative augmentation gas. DUI felt that a 50% increase in the insulation effectiveness was seen with proper purging of the dry suit. No serious studies were attempted. This means your underwear thickness could be reduced for those who are starting to fill their suit out a little more than when they first purchased it or cooler water temperatures could be tackled for a longer period. Respectfully, Jay Jay Jeffries a028171t@bc*.se*.li*.fl*.us*
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