Germicidal Effect

UV-Action

Ultraviolet radiation in the 200-300 nanometer (nm) range is extremely effective in killing microorganisms such as airborne and surface bacteria, viruses, yeasts, and molds.

American Ultraviolet's low-pressure, mercury-arc germicidal lamps are specially designed to produce the highest amounts of UV radiation- typically about 90% of the total rated energy is at 253.7nm. This radiation is very close to the peak of the germicidal effectiveness curve of 265nm, the most lethal wavelength to microorganisms (see graph below). Our germicidal lamps are used extensively in air and water purification applications such as in the food and beverage industry, medical applications, HVAC systems (Heating, Ventilation, and Air Conditioning), pharmaceutical and semiconductor sterilization applications. In addition, they are used in drinking water, waste water, and ground water remediation.

Ozone-Action

Our "VH" germicidal lamps generate energy at 185nm in addition to the 253.7nm line. This UV emission produces abundant amounts of ozone in the air. Ozone is an extremely effective oxidizer. It destroys microorganisms on contact and acts as a deodorizer.

One of it primary advantages is that it can be carried by air into places that the UV radiation cannot directly reach. We design and manufacture lamps to produce various amounts of ozone to meet specific application requirements. "VH" lamps are typically used in the treatment of air, pool, and spa water, T.O.C. (Total Organic Compound) reduction, and HVAC. 
 

• Environmentally friendly, no dangerous chemicals to handle or store, no problems of overdosing
• Low initial capital cost and reduced operating expenses when compared with other technologies such as chemical processing
• Immediate treatment process, no need for holding tanks, long retention times
• No chemicals added to water supply; no by-products
• No change in taste, odor, pH, conductivity or the general chemistry of the water
• No handling toxic chemicals, no need for specialized storage requirements
• Simplicity and ease of maintenance, periodic cleaning (if applicable) and annual lamp replacement
• Highly compatible with other water and air treatment processes