The standard establishes that fire extinguishers approved acording to DS 2120 during and after use will receive such inspection, service and treatment that any consumer, manufacturer and authority can be certain that the fire extinguishers, in the period for which they are certified, are, as regards safety and fire protection, of the same quality as when they were approved.
DS 2320:2006 history
2020DS 2320:2020 Fire protection – Fire Extinguishers – Maintenance, periodic inspection, recharging and self-monitoring
2006DS 2320:2006 Fire protection - Fire extinguishers - Pressure testing, inspection and recharging
1990DS 2320:1990 Fire protection. Fire extinguishers. Pressure testing, inspection and recharging