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Low-pressure mercury vapour discharge lamps. The inner envelope is coated with a fluorescent powder, emitting long wave UV radiation to excite luminescence. The dark blue glass envelope transmits UV-A radiation, but only minimum visible radiation, as the latter would interfere with luminescence. 'TL'(D)/08 'Blacklight Blue' lamps have a straight outer envelope, and operate on AC mains supply via a ballast and a starter. The PL-S 9W/08 lamp consists of two single-ended fluorescent tubes melted together; the PL-S 9W 2P lamp base contains a specially adapted starter, providing instant starting characteristics. |
Applications
- Detection and analysis in the textile and chemical industry.
- Archaeology.
- Banking.
- Criminology.
- Food industry.
- Medicine.
- Mineralogy.
- Philately.
- Special effects in nightclubs, discos and theatres.
- Sign lighting.
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