Hard coal. Sampling of slurriesWhat is ISO 20904 about? ISO 20904 is an international standard on hard coal that discusses the procedures to create samples for test. ISO 20904 sets out the basic methods for sampling fine coal, coal rejects or tailings of nominal top size <4 mm that is mixed with water to form a slurry. At very high ratios of fine solids to water when the material assumes a soft plastic form, the mixture is correctly termed a paste. The sampling of pastes is not

The document specifies criteria for measurements which can be used if required to measure compliance by inspection

LIMC is the formation of depositions on optical surfaces due to interaction of intense light radiation with outgassing molecules especially from organic materials

BS EN 14594 specifies minimum requirements for continuous flow compressed airline breathing devices for use with a full-face mask

It is a phenomenon of molecular contamination and it is distinguished from particle contamination

the designation polybutene-1 and the abbreviation PB are used in this document

This document specifies the main characteristics and test methods of new fibre ropes used for offshore station keeping

The design is such that all currently identified information can be included in an unambiguous format

Typical users are programmers

Product qualification is excluded from the scope of this document

as well as leather for the uppers of unlined shoes

BS EN 60317-0-7 on particular types of winding wires is relevant to:

performance evaluation as well as scope of improvement for terrestrial photovoltaic (PV) modules