Micro-organisms Killed By The JAC PAC
Micro-organisms include several distinct groups of disease causing
germs divided into five major groups: Viruses, Bacteria, Fungi,
Algae and Protozoa.
The target of the U.V. sterilization is the genetic material or DNA
within the nucleus of the cell of the micro-organism. The U.V. light
penetrates the cell wall and is absorbed by the DNA causing a
scrambling of the genetic information that interferes with the cells
ability to reproduce. A non-reproducing cell is considered harmless
since it is unable to multiply to infectious numbers within a host
(like spa water or a human). The maximum absorption of U.V. light by
DNA occurs at 260 nanometers and the
JAC PAC germicidal lamp operates very close to this
optimum wavelength.
Lethal dosages for numerous micro-organisms have been documented by
health agencies. Most bacteria and viruses require relatively low
dosages for inactivation, usually 10,000 microwatts per second per
square centimetre. Most U.V. equipment is rated to deliver a minimum
dosage of 30,000 microwatts per second per square centimetre.
Our equipment provides a minimum of 40,000 microwatts per second per
square centimetre. In some applications where the micro-organisms
pass through the chamber numerous times, like a spa or pool, the
exposure time produced by the JAC
PAC can become unlimited.
Ultraviolet light is rapidly becoming the method of choice for
sterilization without the use of chemicals such as chlorine. The
major advantage of ultraviolet is that nothing is introduced into
the fluid stream that needs to be removed later. Additionally, U.V.
does not affect the physical or chemical properties of water,
therefore, no change in P.H., colour, odor, temperature, or taste
occurs.
