How Long Will Photoluminescent Exit Signs Glow?
Photoluminescent exit signs are an excellent way for companies to become environmentally friendly while cutting their operating costs. In addition to being electricity and maintenance free, the signs are recyclable, non-toxic and non-radioactive, making them the most economically and environmentally practical safety signs on the market today. Yet, the primary function of safety signs is not the provision of environmental friendliness or corporate economy. They are designed to help people efficiently access building exits, particularly when visibility is compromised and personal safety is at risk. With that said, there are two basic criteria for determining the best safety sign: the length of time the sign remains illuminated during a power outage and the sign’s brightness as determined by a light meter. Photoluminescent safety signs remain illuminated for 16-96 hours in darkened surroundings. The exact length of a sign’s luminescence depends on its ambient light absorption level, which
