Abstract: The cosmetic unit has two partial units, each including a receptacle for receiving a cosmetic substance and a closure cap for allowing the closure of the receptacle. The two partial units are inter-connectable by a coupling member engaging with the two closure caps. Each closure cap has a cap recess, extending in the direction of a central axis, on the axial front end facing away from the receptacle of the corresponding partial unit. The coupling member including a central portion with two axial coupling projections being formed thereon wherein each coupling projection engages with one of the two cap recesses when in an assembled state.

Abstract: The cosmetic unit has two partial units, each comprising a receptacle for receiving a cosmetic substance and a closure cap by means of which the receptacle is closable. The two partial units are inter-connectable by means of a coupling member engaging with the two closure caps. Each closure cap has a cap recess, extending in the direction of a central axis, on the axial front end facing away from the receptacle of the corresponding partial unit. The coupling member comprises a central portion with two axial coupling projections being formed thereon wherein each coupling projection engages with one of the two cap recesses when in the assembled state.

Abstract: The invention relates to a cyanide-free electrolyte being harmless to the environment and to health which makes feasible the production of black surface layers on light metals or on alloys of the latter, preferably titanium, remaining deeply-black and adhesive even after extreme changes in the ambient temperature and having nearly equal values of the optical absorptivity of radiation and of the thermal emission capability (the .alpha./.epsilon.-ratio is about 0.95) by means of the anodic oxidation by spark discharge (ANDF-method). These layers are absolutely X-amorphous and show, hence, an ideal optically isotropic behavior regarding the reflection of radiation. Due to their minmum evolution of gases they offer a high thermovacuum stability. The electrolyte consists of an ammoniacal solution of K.sub.2 H.sub.2 PO.sub.4 potassium dihydrogenphosphate and K.sub.2 CrO.sub.4 potassium chromate. The homogeneity of the optically black layers is ensured by not using fluoride ions and employing acetate ions.

Abstract: The invention relates to a cyanide-free electrolyte being harmless to the environment and to health which makes feasible the production of black surface layers on light metals or on alloys of the latter, preferably titanium, remaining deeply-black and adhesive even after extreme changes in the ambient temperature and having nearly equal values of the optical absorptivity of radiation and of the thermal emission capability (the .alpha./.epsilon.-ratio is about 0.95) by means of the anodic oxidation by spark discharge (ANOF-method). These layers are absolutely X-amorphous and show, hence, an ideal optically isotropic behavior regarding the reflection of radiation. Due to their minimum evolution of gases they offer a high thermovacuum stability. The electrolyte consists of an ammoniacal solution of K.sub.2 H.sub.2 PO.sub.4 potssium dihydrogenphosphate and K.sub.2 CRO.sub.4 potassium chromate. The homogeneity of the optically black layers is ensured by not using fluoride ions and employing acetate ions.