Posted By Mike Craven Is it possible to carry out 5-yearly discharge testing (10-yearly for CO2) some years later than scheduled? For example, if an extinguisher was due to be discharge tested in 2002 but was merely given a further basic annual service in 2003, 2004 and 2005, could it be discharge tested now in 2006? (Brief explanation - Have just taken over responsibility for arranging fire extinguisher servicing and found that my predecessors had all of our extinguishers serviced anually (basic service) but never semed to bother with the discharge test!! Result is that we have a large number of extinguishers which have been given a basic annual service, but are "not maintained" and the servicing company is recommending replacement of them all.) Many thanks Mike