UV does not kill microorganisms like chlorine does, but instead UV inactivates them. UV light at a specific wavelength of 254 nm is readily absorbed by the genetic material of microorganisms. The DNA strand is coded with a specific sequence of something called base pairs. The sequence of these base pairs codes for certain characteristics. UV light at 254 nm is readily absorbed at the point on the microorganism's DNA strand which codes for reproduction.

All Sterilight systems are rated for a 4-log inactivation of bacteria, viruses and protozoan cysts under specific conditions. This rating is at a specific flow rate, and water quality. It is a good idea to have your water microbiologically tested prior to installing a UV system.

The UV Light destroys the DNA of the microbiological contaminants, rendering them non-reproductive and thus sterilized. That is the primary function of UV Dental Toothbrush Sanitizer.

All light is given off at different wavelengths. For example if you see a rainbow, you will notice that the colors are always in a specific order from red all the way to blue. You are able to see each color due to their individual wavelength. These wavelengths are part of the visible portion of the electromagnetic spectrum. UV light is at a wavelength of 254nm (nanometers), and is not visible to the naked eye.

UV-C is the invisible, ultraviolet, C-band radiation that makes up part of the sun's light spectrum. By altering the DNA and RNA and effectively sterilizing the organisms, the UV-C light prevents growth and germination of microorganisms. Once sterilized, they cannot reproduce and with their short life cycles, they are successfully killed.

UV light kills the bacteria by attacking the DNA of a cell preventing cellular division. It attacks the RNA in viruses (preventing replication). Ozone ruptures the cytoplasmic membrane in bacteria cells "lysing" the cell wall. It attacks the RNA in viruses (preventing replication). PHI cells combines both methods.

It is essential that you change your UV lamp annually. The ability of the lamp to emit UV light decreases over time. Remember - UV light is invisible! Even though the lamp is still glowing after one year, there might not be enough UV light reaching your water to be effective.

You never want to expose your skin or eyes to the light from a UV system. UV light is non-visible however it can be harmful, similar to the harmful effects of UV light from the sun. UV lamps can actually cause a severe sunburn-like effect if skin is exposed for long periods of time. Always ensure that you are wearing some type of protective glasses (ie. Safety glasses or sunglasses) when working on a UV system and the lamp is exposed.

Basically, an incandescent Bulb is a simple device - just a tungsten wire sealed in a glass tube. The electric current passing through the wire heats it to incandescence, and the wire produces light. Suppose you took a dark piece of metal. If you heat it in a furnace, it becomes hot and radiates heat, but at first shows no visible effects. As temperature is increased, it turns a dull red, therefore emitting not only heat, but also some light.

COELAN? coating and the associated primer, filters away 99 % of UV light. It is used on boats in the Mediterranean and Caribbean Sea and lasts for many years. We have clients who have experienced product life in excess of more than 10 years.

Depending on the active ingredient(s) and the product formulation, they kill bacteria such as Salmonella and E. coli, which cause intestinal illness, and Staphylococcus which causes skin infections; fungus that causes athlete's foot; and viruses such as Herpes simplex, Rhinovirus, which is the leading cause of the common cold; and Rotavirus, the major cause of diarrhea in young children. Read the label to find out specifically which germs the product is intended to kill.

Sunlight exposure (exposure to UV light) is your body's main source for Vitamin D - an essential vitamin for bone formation and repair, absorption of calcium and phosphorus and general good health. In many climates, the small amount of sunlight available from November to March makes it impossible to process Vitamin D naturally through outdoor sun exposure.

Absolutely. There is a growing body of well-conducted, validated scientific research demonstrating that the production of the activated form of vitamin D is one of the most effective ways the body controls abnormal cell growth. Moderate exposure to sunlight is the only way for the body to manufacture the vitamin D necessary for producing activated vitamin D.

Use a "broad spectrum" sunscreen. The operative word here is "use". Sunscreens can't help you unless you use them and reapply them often. Get a good hat and keep it on. The typical American Baseball hat provides little UV protection. While it protects your nose and forehead, it does nothing for your ears, cheeks, and neck... THE MOST COMMON AREAS FOR SKIN CANCERS TO FORM!!!! Wear only a baseball hat and you are at risk of skin cancer in those areas.

the UV lamps and /or sleeves need to be periodically removed from the reactor chamber, you must leave at least double the length of the disinfection system to facilitate removal. A typical 5 USGPM UV system would require approximately 45" of space either vertically or horizontally.

For information on the UV properties of the euro banknotes, see the guidelines on how to identify counterfeit euro banknotes.

Ultraviolet light has four principal wavelengths: UV-A, UV-B, UV-C and UV-V. Fresh Air Concepts uses a patented "J" Lamp, which produces UV-C and UV-V light. UV-C is short-wave radiation. This wavelength's primary uses are for the destruction of bacteria and other microorganisms that pass through the Aluminum Chamber. The Centers for Disease Control recommends this method for destroying viruses such as Tuberculosis.

It is a fact that prolonged exposure to ultraviolet light will fade colours. However, this requires considerable cumulative amounts of UV light. Because a home UVB unit is used relatively infrequently, (as compared to exterior paint exposed to daily sunlight), our practical experience is that colour fading is not an issue. If it occurs, it is barely perceptible. The only possible exception to this is that fine art should be protected.