Normas ISO

Water quality -- Determination of Kjeldahl nitrogen -- Method after mineralization with selenium

Petroleum products -- Hydrocarbon liquids -- Determination of refractive index

Information processing -- Data interchange on 200 mm (8 in) flexible disk cartridges using two- frequency recording at 13 262 ftprad, 1.9 tpmm (48 tpi), on one side-- Part 2: Track format

Information processing -- Data interchange on 200 mm (8 in) flexible disk cartridges using two-frequency recording at 13 262 ftprad, 1,9 tpmm (48 tpi), on one side-- Part 1: Dimensional, physical and magnetic characteristics

Information processing -- Interchangeable magnetic twelve-disk pack (200 Mbytes)

Information processing -- 9-Track, 12,7 mm (0.5 in) wide magnetic tape for information interchange -- Format and recording, using group coding at 246 cpmm (6 250 cpi)