American ultraviolet has manufactured UVC Germicidal fixtures since 1960, 35 years longer than our manufactirer. UVC have been safely operating in hospitals, laboratories, clean rooms, doctor's offices, commercial buildings, food processing plant, and residences throughout the world- any place a concern for clean air exists AUV is the clear leader in UV technology, and remains committed to providing the highest quality equipment at a fair price. UVC Germicidal Fixtures from American Ultraviolet are unique. They feature the highest High Output (HO) Lamps, which provide even greater efficiency than lamps other companies offer. And our lamps don't lose as much germicidal energy when temperatures fall within the HVAC system, enabling them to kill more mold and bacteria across a wider temperature and air velocity range than all others.
Ultra violet or UV is generated by the sun. UV is part of the light spectrum.
The full electromagnetic waves include Cosmic ray, Gamma ray , X ray , Ultraviolet Ray, Visible lights, Infrared Ray, Micro Wave, Long Wave and Radio Wave. The spectral range of ultra violet radiation is by definition , between 100 -400 nanometers and is thus invisible. The UV spectrum is subdivided into three categories
This ranges from 100 to 280 nanometers. Fortunately, UVC is completely absorbed by atmospheric Ozone and oxygen. Even with severe ozone reduction, UVC radiation would still be absorbed by the remaining ozone. It is known as short wave Ultraviolet. Also called germicidal Ultraviolet.
Ozone (O3) is an unstable form of oxygen. The word "OZONE" is derived from the Greek "Ozein"-meaning to smell. Ozone is a gas that occurs both in the Earth's upper atmosphere and at ground level.
Most people would think ozone is something toxic in the air. But it's just not so, in health related matters for example : ozone technology reduces infection at home and in health cafe facilities. Ozone is a gas that occurs both in the earth's upper atmosphere and at ground level. Ozone can be good or bad for your health and the environment, depanding on its location in the atmosphere.
Ozone occurs in two layers of the atmosphere. The layer closest to the Earth's surface is the troposphere. Here, ground-level or "bad" ozone is an air pollutant that is harmful to breathe and it damages crops, trees and other vegetation. It is a main ingredient of urban smog. The troposphere generally extends to a level about 6 miles up, where it meets the second layer, the stratosphere. The stratosphere or "good" ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV) rays.
Ozone is produced naturally in the stratosphere. But this "good" ozone is gradually being destroyed by man-made chemicals referred to as ozone-depleting substances (ODS), including chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, methyl bromide, carbon tetrachloride, and methyl chloroform. These substances were formerly used and sometimes still are used in coolants, foaming agents, fire extinguishers, solvents, pesticides, and aerosol propellants. Once released into the air these ozone-depleting substances degrade very slowly. In fact, they can remain intact for years as they move through the troposphere until they reach the stratosphere. There they are broken down by the intensity of the sun's UV rays and release chlorine and bromine molecules, which destroy the "good" ozone. Scientists estimate that one chlorine atom can destroy 100,000 "good" ozone molecules.
Ozone depletion can cause increased amounts of UV radiation to reach the Earth which can lead to more cases of skin cancer, cataracts, and impaired immune systems. Overexposure to UV is believed to be contributing to the increase in melanoma, the most fatal of all skin cancers. Since 1990, the risk of developing melanoma has more than doubled. UV can also damage sensitive crops, such as soybeans, and reduce crop yields. Some scientists suggest that marine phytoplankton, which are the base of the ocean food chain, are already under stress from UV radiation. This stress could have adverse consequences for human food supplies from the oceans.
Ground-level or "bad" ozone is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight. Emissions from industrial facilities and electric utilities, motor vehicle exhaust, gasoline vapors, and chemical solvents are some of the major sources of NOx and VOC.
At ground level, ozone is a harmful pollutant. Ozone pollution is a concern during the summer months because strong sunlight and hot weather result in harmful ozone concentrations in the air we breathe. Many urban and suburban areas throughout the United States have high levels of "bad" ozone. But many rural areas of the country are also subject to high ozone levels as winds carry emissions hundreds of miles away from their original sources.
Breathing ozone can trigger a variety of health problems including chest pain, coughing, and throat irritation. It can worsen bronchitis, emphysema, and asthma. "Bad" ozone also can reduce lung function and inflame the linings of the lungs. Repeated exposure may permanently scar lung tissue.
Healthy people also experience difficulty breathing when exposed to ozone pollution. Because ozone forms in hot weather, anyone who spends time outdoors in the summer may be affected, particularly children, older people, outdoor workers and people exercising. Millions of Americans live in areas where the national ozone health standards are exceeded.
Ground-level or "bad" ozone also damages vegetation and ecosystems. It leads to reduced agricultural crop and commercial forest yields, reduced growth and survivability of tree seedlings, and increased susceptibility to diseases, pests and other stresses such as harsh weather. In the United States alone, ground-level ozone is responsible for an estimated $500 million in reduced crop production each year. Ground-level ozone also damages the foliage of trees and other plants, affecting the landscape of cities, national parks and forests, and recreation areas.
The UV treatment process is an extremely rapid physical process, that causes a molecular rearrangement of the genetic material, known as the DNA, of the microorganism. In the electomagnetic spectrum, UVC germicidal bandwidth range from 100 to 280 nanometers. The most effective strelizing wavelength is 253.7, nanometers. This UVC energy targets the DNA or RNA of microorganisms, causing cell death or making replication impossible. It also kills or inactives microbes, eradicating surface and airborne mold. Fungal as well as viruses and bacteria
The basic methods of disinfection by UVC are :
The decontamination of raw material surfaces and product surfaces etc. Increases product yield and safety, lengthens product shelf life and reduces / eliminates the use of preservatives and germicides.
Other applications of UVC are as follows:
DNA is the main constituent of all chromosomes of all organisms, known as deoxyribonucleic acid, and is self replicating. This blocks the microorganism's ability to replicate itself, and consequently its ability to breed colonies Due to individual cell makeup, different microorganisms require different levels of UV energy for their destruction This energy level is known as dosage