To do archeological work with FullFaceMask, I would definitely go for the swedish Interspiro/AGA option with constant overpressure ... it is easy to use, it permits communications if needed and it is safe ... only a helmet would be a better alternative under such conditions. My opinion. I worked a lot fishing up tiny monsters for experimentation in 4-8ÂșC water while studying marine biology in Sweden. Under such conditions, the problem is the wind before the dive. Another point to consider would be that: many scandinavian cave divers use Apeks ... TX50's ... TX40's ... aldo.solari@ho*.se* www.ccbb.ulpgc.es/fish-ecology/solaris ___ MS> -----Original Message----- MS> Our section is in the process of selecting new MS> regulators for use by our archaeologists. These guys MS> will be periodically exposed to -2 degree centigrade MS> water, arctic variety ambient air temp. and depths to 40 MS> m. in isolated areas. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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