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Biotech / Medical : Biotech News -- Ignore unavailable to you. Want to Upgrade?

To: DewDiligence_on_SI who wrote (6868)	12/5/2010 5:49:20 PM
From: IRWIN JAMES FRANKEL	Read Replies (1) \| Respond to of 7143

>>The existing UV lights are ubiquitous. They’re in almost every hospital hallway, but it’s easy to not notice them. I don't know about that. If you are saying that germicidal UV lights are being used to light hallways - I do not believe it. I have no doubt they are used in ducts and biohazard hoods. I used (35-45 years ago) to build them for use in air ducts, food processing and hospitals. But the ones we built and sold could not be used anywhere that they would shine on people - it would burn them. Our lights were similar to long florescent bulbs but had quartz lenses and arc'ed mercury to maximize the wavelengths with germicidal effect. Those wave lengths quickly burn the skin and eye. The physics of that has not changed. You cannot light hospital hallways with them. :-) Used in biohazard hoods, ducts, other enclosures away from the user they are fine. These bulbs also had far shorter useful lives than was apparent. They gave off "light" long after they no longer emitted the germicidal wave lengths. In contrast, the HINS lights CLAIM to have achieved with LED's the germicidal effect while eliminating the burning. That is a serious breakthrough. ij