Normas ISO

Piping systems for rehabilitation of underground gas supply networks — Part 1: Polyethylene (PE) material

Information technology — Coding of audio-visual objects — Part 22: Open font format

Microbiology of the food chain — Horizontal method for the detection and enumeration of Listeria monocytogenes and of Listeria spp. — Part 2: Enumeration method — Amendment 1: Inclusion of storage of the samples before analysis and changes in the control strain for performance testing of culture media and reagents

Microbiology of the food chain — Horizontal method for the detection and enumeration of Listeria monocytogenes and of Listeria spp. — Part 1: Detection method — Amendment 1: Inclusion of storage of the samples before analysis and changes in the control strain for performance testing of culture media and reagents

Glass in building — Determination of thermal transmittance (U value) — Calculation method

Information technology — Data use in smart cities — Part 1: Framework