07-09-2006, 07:57 PM
Join Date: Dec 2005
iTrader Positive Rating: 100%
There should be an actual date stamped directly on the cylinder. Near the top of the cylinder.
According to the info above, I believe the stamp date when it was last hydro tested is 1/04 (Jan 2004).
Typically it's a 5 year retest. So the next retest will have to be sometime before Jan. 2009. When they retest it, they'll put a new date on it right underneath the old date.