This International Standard specifies a limited number of colours of gold alloys.
By specifying a range of gold alloy colours, this International Standard enables a corresponding range of polished gold colour slips to be produced for comparison purposes for use in routine transactions between manufacturer and purchaser. It applies to jewellery, and to watch cases and accessories made of gold alloys or watch cases and accessories with gold alloy coverings.
DS/EN 28 654:1993 history
1994DS/EN 28 806-4:1994 Information technology - Computer graphics - Graphical Kernel System for Three Dimensions (GKS-3D) language bindings - Part 4: C
1993DS/EN 28 849:1993 Small craft - Electrically operated bilge-pumps
1993DS/EN 28 846:1993 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases
1993DS/EN 28 805:1993 Information Processing Systems - Computer graphics - Graphical Kernel System for Three Dimensions (GKS-3D) functional description
1993DS/EN 28 630-3:1993 Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 3: Track format B for 80 tracks
1993DS/EN 28 630-2:1993 Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 2: Track format A for 77 tracks
1993DS/EN 28 630-1:1993 Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristics
1991DS/EN 28 877:1991 Information processing systems - Interface connector and contact assignments for ISDN basic access interface located at reference points S and T
1991DS/EN 28 860-2:1991 Information processing - Data interchange on 90 mm (3.5 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad on 80 tracks on each side - Part 2: Track format
1991DS/EN 28 860-1:1991 Information processing - Data interchange on 90 mm (3.5 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristics
1991DS/EN 28 847:1991 Small craft - Steering gear - Wire rope and pulley systems
1991DS/EN 28 627:1991 Dentistry - Stiff ness of the tufted area of tooth-brushes
1991DS/EN 28 378-2:1991 Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad, 3,8 tpmm (96 tpi), on both sides - Part 2: Track format A