These requirements cover air filter units of both washable and throw-away types for removal of dust and other airborne particles from air circulated mechanically in equipment and systems.
Information technology — Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s — Part 1: Systems — (ISO/IEC 11172-1:1993)
Information technology — Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s — Part 2: Video (ISO/IEC 11172-2:1993)
Information technology — Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s — Part 3: Audio (ISO/IEC 11172-3:1995)