Air quality. Determination of the uncertainty of the time average of air quality measurements1 Scope This International Standard provides a method for the quantification of the uncertainty of a time average of a set of air quality data obtained at a specified location over a defined averaging time period. The method is applicable to air quality data obtained by continuous or intermittent monitoring by means of a specified measuring system. The uncertainty of the time average depends on both the uncertainty of the measurement results and the

The limit of determination is 1% mass fraction for ADF and 1

BS EN 12857 provides you with guidance on apparatus and equipment

Industry practitioners such as consultants and architects

it assumes that the designer has proper information available concerning task and user requirements and understands the use of available technology (this may require consultation with a qualified ergonomics professional as well as empirical testing with real users)

Contents of BS EN 794-1:1997+A2:2009:

Note 1: Writing rules for unalloyed aluminum are specified in EN 576

BS EN 1497:2007 has made some technical changes compared to the previous editions EN 1497:1996

construction and performance of components intended for use in powder firefighting systems complying with prEN 12416‑2:2000

Other methods

enamel and porcelain

Annex A defines object identifiers assigned to the digital signature mechanisms specified in ISO/IEC 14888-3

for use in hydraulic actuating cylinders employing road vehicle non-petroleum base hydraulic brake fluid conforming to the requirements of ISO 4925