The phosphorescent paint described in this commercial item description is a high grade material designed for use as markers, indicators, etc., in civilian and non-operational military applications. All grades meet luminescent requirements for photoluminescent systems of the International Maritime Organization, adopted in 1993. Operational military uses are covered by A-A-50598.

This paint is intended to be applied over properly primed steel, wood, and wallboard, and topcoated with a clear, washable, top coat. The primer should be white.

This phosphorescent paint also can be used in interior accommodations, working and machinery spaces of merchant vessels. The markings applied should be sufficient in character to clearly show in darkness the positions of exit doors, ports, ladders, companionways, the location of emergency lights, control valves, and similar vital locations. If a fire retardant phosphorescent paint is required, use paint conforming to A-A-50598.

Grade A paint has a high initial brightness and exceeds the requirements of the German Industrial Norm (DIN) 67510. It's luminance intensity after five hours is approximately 100 times the visibility limit. Grade B meets the requirements of DIN 67510. Grade C has a little lower luminance intensity than Grade B.