Application: The AQUA-Ex luminaires are industrial dustproof and waterproof fluorescent lighting fixtures, suitable for the lightening of premises with danger of explosion of flammable dust – zone 1, 2 and for the lightening of premises with danger of explosion of flammable gas. Luminaire consists of a few main parts: body of the lighting fixture, reflector with equipment, sealing plug with bushing. The luminaires are certified by FTZÚ Ostrava – Radvanice (type examination certificate number FTZÚ 04 ATEX 0141X). Body: The body of the lighting fixture is formed by plastic tube with 4 mm thick wall which is produced from transparent polycarbonate. It guarantees good mechanical resistance against impact. The flammability level of the material is B (difficult of flammability). The tube is ended off by the sealing plug with bushing M20x1,5, designed for the premises with danger of explosion. Reflector: The reflector of the lighting fixture is shifted in the basic body. The reflector is produced from white painted metal sheet, 0.5 mm thick. It can be produced also from aluminium profile. The electric components are mounted on it. Special profile is used for cover of electrical parts. System of fastening: The lighting fixtures can be fastened on the ceiling, respectively on the walls, of illuminated space by means of four screws. It can be suspended on a cable by means of self-locking cable suspender or hung on a chain via suspension brackets. For changing of luminous source is necessary to push out bearing ribbon from lighting fixture.