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tpscuba · 12-10-2003, 11:36 AM,

according to the gentleman I talked with if you are just doing it for yourself there is nothing they will do unless there is an incident. If you are doing friends personally I would be concerned with the the year on their tanks most of these tanks are ones made prior to 1990 and you can always call the manufactor ie; Luxfer, Walter Kiddie, Catalina and with the serial number they can tell you the composition of your tank if it is one that is of concern they will let you know.