Insulating liquids. Methods for counting and sizing particles1 Scope This standard describes the sampling procedures and methods for the determination of particle concentration and size distribution. Three methods are specified. One uses an automatic particle size analyser, working on the light interruption principle. The other two use an optical microscope, in either the transmitted light or incident light mode, to count particles collected on the surface of a membrane filter. The optical microscope methods

BS EN ISO 11138-4:2006 provides specific requirements for test organisms

BS EN 3155-029  on Shielded Electrical contacts used in the elements of connection is useful for:

a)      Correction of the title of a standard in Clause 2

Other requirements can be found in separate International Standards:

Regulation 5

k)       The tensile test procedure has been entirely amended

1 pH units

Calculation of thermal transmittances

and overload resistance

Electrical connectors are manufactured for power

care should be taken that the maximum size of the electric hair care appliance under test fulfils the requirements specified in 1

BS EN ISO 14031:2013 is the international standard outlining recommendations on the design and use of Environmental Performance Evaluation (EPE) within an organization