Biotechnology — Cell counting — Part 2: Experimental design and statistical analysis to quantify cou...
This document provides a method for evaluating aspects of the quality of a cell counting measurement process for a specific cell preparation through a set of quality indicators derived from a dilution series experimental design and statistical analysis. The quality indicators are based on repeatability of the measurement and the degree to which the results conform to an ideal proportional…
Elastomeric seals — Material requirements for seals used in pipes and fittings carrying gaseous fuel...
This document specifies requirements for elastomeric materials used in seals for supply pipes and fittings, ancillaries and valves at operating temperatures in general from ?5 °C up to 50 °C and in special cases from ?15 °C up to 50 °C, for the following:
a) general applications (see Table 4, type G series):
— gaseous fuel [manufactured, natural and liquefied petroleum gas (LPG) in the…
Processes, data elements and documents in commerce, industry and administration — Long term signatur...
This document specifies the elements defined in the international standards of ISO/ITU-T, ETSI and IETF RFC that enable at least a proof of existence of data objects and digital signatures and the preservation of the validity status of digital signatures over a long period of time used in validation.
It provides the definitions of the proof of existence (PoE) attributes and clarification of the…
Railway applications - Fixed installations - Electronic power converters for substations
IEC 62590:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 62590:2019 specifies the requirements for the performance of all fixed installations electronic power converters,…
Environmental testing - Part 3-3: Supporting documentation and guidance - Seismic test methods for e...
IEC 60068-3-3:2019 applies primarily to electro-technical equipment but its application can be extended to other equipment and to components. In addition, if some type of analysis is always performed when making a seismic qualification, for example for the choice of the representative sample to be tested or for the extension of the seismic qualification from the tested specimen to similar…
Environmental testing - Part 3-3: Supporting documentation and guidance - Seismic test methods for e...
IEC 60068-3-3:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 60068-3-3:2019 applies primarily to electro-technical equipment but its application can be extended to other…
Railway applications - Fixed installations - Electronic power converters for substations
IEC 62590:2019 specifies the requirements for the performance of all fixed installations electronic power converters, using controllable and/or non-controllable electronic valves, intended for traction power supply. The devices can be controlled by means of current, voltage or light. Non-bistable devices are assumed to be operated in the switched mode.
This document applies to fixed…
Stationary source emissions— Determination of the mass concentration of ammonia — Manual method
This document specifies a manual method of measurement including sampling and different analytical methods for the determination of the mass concentration of ammonia (NH3) in the waste gas of industrial plants, for example combustion plants or agricultural plants. All compounds which are volatile at the sampling temperature and produce ammonium ions upon dissociation during sampling in the…
Consideration of energy efficiency in wireless power transfer technology
IEC TR 63231:2019 describes the technical background of current energy efficiency efforts related to wireless power transfer (WPT) technology and commercially available products related to related to audio, video and multimedia systems and equipment. This Technical Report examines use cases, standardization efforts of other standards development organizations (SDOs) and known national regulations…
Liquid crystal display devices - Part 30-3: Measuring methods for liquid crystal display modules - M...
IEC 61747-30-3:2019(E) applies to transmissive type active matrix liquid crystal displays.
This document defines general procedures for quality evaluation related to the motion performance of transmissive thin film transistor (TFT) LCDs. It defines artefacts in the moving image and methods for motion artefact measurement.
NOTE Motion blur measurement methods and analysis methods introduced in…
