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prEN 15991

Testing of ceramic raw materials and ceramic materials - Direct determination of mass fractions of impurities in powders and granules of silicon carbide by inductively coupled plasma optical emission spectrometry with electrothermal vaporisation (ETV-ICP-OES)

Project

prEN 17671

Heating systems and water-based cooling systems in buildings - Design for water-based cooling systems

Road lighting - Part 1: Guidelines on selection of lighting classes

Road lighting - Part 1: Guidelines on selection of lighting classes

Heating systems and water-based cooling systems in buildings - Design for water-based cooling systems; German and English version prEN 17671:2024

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