DIN EN ISO 23328-2:2009-07
麻醉和呼吸用呼吸系统过滤器 - 第 2 部分:非过滤方面 (ISO 23328-2:2002)
Breathing system filters for anaesthetic and respiratory use - Part 2: Non-filtration aspects (ISO 23328-2:2002); German version EN ISO 23328-2:2009 / Note: DIN EN ISO 23328-2 (2008-06) remains valid alongside this standard until 2010-03-21.