About Steri-PenŽ
Hydro-Photon was formed for the expressed purpose of developing a highly portable pocket sized water purification device suitable for travelers, campers and other individuals concerned about the quality and safety of their drinking water supply.
Reports from around the world continue to confirm the deterioration of the water supply. Much of the pollution is microbial in nature. Many of the treatment methods for water deal only with the "aesthetic" qualities of the water, taste, clarity and are not effective in the microbial purification of the water.
Ultraviolet Light has been used to purify water for over 50 years. It is accepted by the United States Public Health Service as a standard method for water purification and is extremely effective. Traditional devices designed to purify water using ultraviolet light are large and not at all portable.
Hydro-Photon has combined miniaturized electronic components in a highly efficient system design to produce a pocket-sized device capable of disinfecting approximately 100 sixteen-oz. glasses of water before recharging.
While no device of this type or size is currently on the market, the increased interest in water quality has spurred sales of all types of water treatment devices from simple filters to complex units. Bottled water, much of which is treated with ultraviolet light as a final stage prior to bottling, is becoming increasingly
popular with US sales of over 3 billion dollars last year.
How Ultraviolet Light Disinfects
Ultraviolet light disinfects rapidly without the use of heat or chemicals. Ultraviolet treatment is often used in the final stage treatment of bottled water. Operating rooms, isolation areas and other medical facilities make extensive use of ultraviolet germicidal lamps to maintain a low bacterial count in the surrounding air.
Ultraviolet light treatment is a proven and accepted method for disinfecting drink water. Short wave length ultraviolet light, commonly referred to as UV-C occurs between the wave length of 200 and 265 nanometers, and this is where the most effective germicidal actions occurs.
The Hydro-Photon Lamp Produces 90% of its light at the 254.7 nanometers and is, therefore very effective as a anti-microbiological agent.
Microorganisms encompass a wide variety of unique structures and can be grouped into five basic groups: bacteria, virus, fungi, protozoa, and algae. A microorganism is composed of the cell-wall, cytoplasmic membrane and the cell's genetic material, nucleic acid. It is this genetic material or DNA this is affected by the
Ultraviolet light. As UV-C penetrates through the cell wall it caused molecular rearrangement of the microorganism's DNA thus preventing reproductions. If a cell can not reproduce, it is considered to be microbiologically dead. Due to individual cell makeup, different levels of UV energy are required for destruction. The effectiveness of UV microbial destruction is a product of both time and intensity.
The intensity of UV-C light is measured in micro-watts per square centimeter and the time is measured in seconds. Hence the amount of ultraviolet light necessary to kill a particular microorganism is reported in units of micro-watt seconds per quare centimeter; this in known as the dose. UV light testing has shown that Steri-PenŽ provides between 38,00 and 60,00 micro-watt
seconds per square centimeter. The following table shows the dose required to kill common microorganisms.
Microorganism Destruction Levels
(ultraviolet energy at 253.7nm wavelength required for 99.9% destruction of various microorganism - in uwsec/cm/2
8,700 Bacillus anthracis
6,500 Corynebacterium diphtherial
4,200 Dysentary bacilli (Diarrhea)
7,000 Escherichia coli (Diarrhea)
3,800 Legionella pneumophilia
10,000 Mycobacterium tuberculosis
3,900 Pseudomonas aeruginosa
6,100 Salmonella paratyphi (enteric fever)
10,000 Salmonella (food poisoning)
7,000 Salmonella typhosa (typhoid fever)
4,200 Shigella dysentariae (dysentery)
3,400 Shigella flexneria (dysentery)
5,800 Staphylococcus epidermidis
10,000 Streptococcus faecaelis
6,500 Vibro commo (cholera)
6,500 Bacteriophage (E.Coli)
8,000 Hepatitis
6,600 Influenza
7,000 Poliovirus (poliomyelitis)
8,800 Baker's yeast
How Steri-PenŽ Works
To operate, Steri-PenŽ is activated with a simple button sequence. Once engaged, the on board microcomputer determines the proper dose duration. When Steri-PenŽ's liquid level sensors indicate that the germicidal ultraviolet lamp
is fully immersed in the class or cup of water, them microcomputer activates the lamp for the dose period (between 38 and 48 seconds). After less than a minute of gentle stirring the treated water is disinfected and ready to drink.
To Operate Steri-PenŽ
1. Lightly push and release the button.
To deliver a UV dose, simply dip the lamp end of the device into the water to be treated until the lamp is completely immersed.
At this point the liquid sensors will detect water and automatically activate the UV lamp.
Once Steri-PenŽ's lamp comes on the device should be used to gently stir the water until the lamp goes off and the green light indicator LED comes on.
At this point, the treatment is complete.
If the lamp is not kept completely immersed during the treatment, Steri-PenŽ will shut off the lamp and light the Red LED to indicate an incomplete dose.
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