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 dose is the energy that is coming off the UV lamp over a specific time period. Therefore, UV dose (or fluence) is a product of UV intensity and time. Dose is usually measured in milli joules per square centimeter. Each Sterilight system is rated to disinfect your water at specific flowrate, under specific water quality conditions to give a UV dose of 30 mJ/cm2 at the end of the lamp life (which is one year). If you were to run say 10 USGPM through a 5 USGPM Sterilight system (ie.

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.

Since children get 80% of their lifetime sun exposure before the age of 18 and their skin is very sensitive they need special sun protection. Playing out in the sun is fun so let them wear a shirt, put on a wide brimmed hat and put on a good amount of sun protection cream with at least SPF 15. Reapply every one to two hours. Use sunblock on very exposed areas. They come in different colors and can even be fun for your children.

This again depends on cleanliness. If the material is kept clean, the UV stability is greatly enhanced. I will provide some literature references on this matter with the next few days (it is very late at night and I need to do an extended web search, since I can't send my hard copies). Sintered PTFE such as Fluorilon has been used extensively as a standard for spectrophotometers and spectroradiometers in low-earth orbit space platforms.

UV systems are designed based on a specific flow rate under specific water conditions. Therefore it is imperative that you know what the maximum flow rate that your pump can handle. Sterilight systems DO NOT come equipped with flow restriction, therefore if you purchase a 5 USGPM system but then proceed to flow 10 USGPM through it you will compromise your disinfection. It is important to never undersize the UV. When in doubt about the size, always chose the larger system (higher flow rate).

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.

A Sterilight system requires two water connections and one electrical. Very simple. You can install any of the Sterilight systems either vertically or horizontally HOWEVER there is a right and a wrong way to do this.

No, Sterilight systems are designed with inlet/outlet ports correctly sized for the specific application. As an example, the 8 USGPM system comes with 3/4" ports. The typical pressure drop on this system would be 2-3 psi.

Yes, E. coli requires a UV dose of between 6 -10 mJ/cm² to achieve a 4-log inactivation. This is well within the capabilities of Sterilight UV systems.

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 Index is a simple measure of the intensity (strength) of the sun's ultraviolet (UV) rays on a given day. It is measured using a scale that runs from 0 (lowest intensity) to 12 (highest).

Ultraviolet (UV) rays are located just past the violet portion of the visible light spectrum; sunlight is the main source. UV light is broken into three different types: UVA, UVB and UVC. UVA has longer wavelengths and passes through glass easily; experts disagree about whether or not UVA damages the eyes. UVB rays are the most dangerous, making sunglasses and sunscreen a must; they don't go through glass. UVC rays do not reach the Earth because its atmosphere blocks them.

Most people think that they're only at risk when they're outside on a sunny day, but UV light can go right through clouds, so it doesn't matter if the sky is overcast. The sun's rays are strongest between 10 am and 2 pm. Glare and reflections can give you trouble, so have your sunglasses ready if you'll be around snow, water or sand, or if you'll be driving (windshields are a big glare source).

Under normal home phototherapy usage, the bulbs have a useful life of at least three to five years, and as many as ten years. Fluorescent bulbs gradually lose power over time so that over many years, treatment times are perhaps double that of new bulbs, but the type of light remains consistent (has nearly the same relative spectroradiometric profile). The decision to replace bulbs is therefore only a matter of the patient's tolerance of longer treatment times.

Moderate exposure is the most responsible way to maximize the potential benefits of sun or UV exposure while minimizing the potential risks associated with either too much or too little sunlight. Avoiding sunburns is critical to moderation. Experiencing painful sunburns before the age of 20-not lifetime exposure to the sun-is the factor associated with an increased risk of malignant melanoma, the most serious type of skin cancer. According to Dr.

Ultraviolet (UV) radiation is part of the natural radiation found in the invisible light spectrum. There are 3 ranges of UV: UVA, UVB and UVC. Prolonged exposure to UVA and UVB rays may increase the possibility of significant eye damage, including temporary discomfort to long-term vision problems such as cataracts. All Tifosi Optics lenses offer 100% UVA and UVB protection.

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.

UV and non-UV are abbreviations for the kinds of coating used on our paper. Here are some of the core differences and applications: UV (Ultraviolet Coating) is a clear liquid spread over the paper like ink and then cured instantly with ultraviolet light. UV coating gives more protection and sheen than either varnish or aqueous coating. Since it is cured with light and not heat, no solvents enter the atmosphere.