This European standard is applicable to the optical performance of untreated or coated materials supplied in plane sheet or strip form for use as a plane or formed reflector as well as preformed reflectors both as originally produced and after prescribed tests to determine probable maintained performance in service. This includes:
a) untreated base materials, including:
1) aluminium,
2) steel,
3) plastic,
4) glass.
b) surface treated materials, including:
1) polished materials,
2) anodised materials,
3) vacuum metallised materials,
4) painted materials,
5) multilayer systems.
This European Standard is not applicable to fluorescent materials.