Household and similar electrical appliances - Safety - Part 2-69: Particular requirements for wet and dry vacuum cleaners, including power brush, for commercial use (IEC 60335-2-69:2002 + A1:2004 + A2:2007, modified) (english version)
General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2005); German and English version EN ISO/IEC 17025:2005, Corrigenda to DIN EN ISO/IEC 17025:2005-08; German and English version EN ISO/IEC 17025:2005/AC:2006— 4 стр.
Ambient air - Standard gravimetric measurement method for the determination of the PM<(Index)10> or PM<(Index)2,5> mass concentration of suspended particulate matter— 62 стр.