In this episode Terry Gorman, 3M’s Technical Services Manager for the Personal Safety Division in Australia and New Zealand joins us to discuss when and why to change respiratory filters. Respirator filters do not last forever. As they do their job capturing airborne contaminants in the maze of fibres that is the filter, it becomes harder for air to make its way through and It becomes too difficult to breathe. If not changed regularly undue physical burden will be placed on the worker, and particulate filters or gas & vapour cartridges may not provide adequate protection after having reached their capacity.