Fluorescent Tube (UV-A Nail Lighting) is a mercury discharge lamp which emits ultra violet light source or wavelength 365nm. Ultra violet is emitted and control by the powder coated on the lamp body to create the desired UV spectrum. UVA light source have a very big scope application. They are used in forensics, photocopying and a broad range of industrial use. The most popular usage of UVA is a nail lamp light source used to enhance solidification of nail polish. UVA lamp is available in different lamp shape, which can be T5, T8, PL-S and PL-L lamps. They work with most electronic ballast in the market and some small wattages can work with magnetic ballast. Solid state mercury (amalgam) could be used to improve safety, stability and environmentally friendliness of the product.