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ultra-violet disinfection rays
The radiation of ultra-violet (UV) belongs to the wave radiation electromagnetic, similarly the as radiation X-ray, radio waves or the light.
It was divided on three areas for the practical use of the spectre UV:
> UV-and - long-wave 400 nm - 315 nm
> UV-B - middle-wave 315 nm - 280 nm
> UV-C - short-wave 280 nm - 100 nm
The radiation of the group UV and is present in the rays of the sun. It relates to photochemical cases.
The radiation of the group UV-B has the basic use in the therapy. He creates the provitamin D.
The radiation of the group UV-C possesses the strong effect for the bacteria. He causes the scald of the skin (Erytema).
The radiation UV-C comes into being from at low-pressure mercuric unloadind (germicidal tubes). Radiation of the length of the wave below 200 nm creates ozone in the air. This is harmful .The special quartz glass which possesses the high coefficient of the broadcast absorbs undesirable radiation of UV about the length of the wave below 200 nm. Therefore TUV bulbs emit the scarce quantity of ozone and this only during first 100 hours of shining.
The contaminated air in the hall without germicidal lamps
The process of the cleaning of and external bulbs (air and surfaces)
Affirmed that the the largest germicidal effect stepped out radiating about the length of the wave from 250 to 270 nm. The germicidal mechanism consists in absorbing through nucleic acids and the whites of the energy of the radiation UV-C, which arousing chemical reactions in testicles kills microorganisms.
Applied bulbs TUV of the maximum of their "germicidal power" possess in the range 250 to 270 nm just.
A -the the largest germicidal effect is achieved radiating in range of length of waves from 250 to 270 nm
B - the crook of absorb of acids nucleic
C - cosmic radiaton by discharge in low-pressure mercury vapoue
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The destination:
Applying germicidal lamps is one of the most effective methods of disinfection. These devices emit the radiance UV-C about the length of the wave 253,7 nm. Radiance this has the strongest degradation proprieties of cools bacteria, viruses, moulds, mushrooms and all different micro-organisms.
Because of the large effectiveness of the germicidal lamps they are required sterility everywhere where the high quality of microbiological cleanness is required.
The use:
- the hospitals, operating theatres, surgical the surgeries studies, dressing studies, patients rooms, the room of parties, isolation ward halls.
- outpatient clinics (medical and surgical the surgeries studies)
- labolatories
- the drugstore
- the pharmaceutical, food industry, cosmetic industry
- the hotel industry and gastronomy
The instruction of the use of the lamps contains the detailed description of ways and the methods of applying germicidal lamps.
Selection of quantity and the power of lamps depends on many factors, as: the height of the rooms, his shape, the largeness of the coefficient of the reflection of the surface (walls) in the room, temperature, humidity and the degree of pollination of the air. From the practical point of the sight:
- lamp 15W on area to 6 m2
- lamp 2x15W on area to 10 m2
- lamp 20W on area to 12 m2
- lamp 2x30W on area to 18 m2
In the room about alt . 2,5 to 3m. To get the clear effect of the disinfection of the air in the room we turn on the lamp from 2 to 8 hours. In dependence from destination of the room (the patient hall, medical study, surgical study, operating hall) the lamp (e.g. between two interventions) we turn on from 15 to 20 minutes.
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Germicidal Lamps
