As of 2011, the municipality maintained a total of 4, 678 street lamps : 1, 351 sodium lamps, 224 mercury vapour lamps, 3, 028 tube lights and four high mast beam lamp.
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There are a total of 2, 875 street lamps in the town : 276 sodium lamps, five mercury vapour lamps, 2, 592 tube lights and two high-mast beam lamps . and the surrounding rural areas.
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:mercury vapour lamps do, but they are for rather specialist applications . ordinary fluoro tubes do produce UV, but this is wavelength-shifted by the lamp phosphors down into the visible . any residual UV ( if any ) will be soaked up by the glass envelope . have a look at fluorescent lamp . and with regards to the original question, see if you can get some silica gel F254 from a chemistry contact . a Xcomradex 02 : 23, 6 November 2006 ( UTC)
