Clinical study of Disinfectant light

The Lighting Principle of UV-C Lamp

UV-C fluorescent lamp produces λ=253.7nm ultraviolet rays, are made of ordinary glass, through which UV rays can not radiate but be absorbed by fluorescent powder to change into visible light. While UV germicidal lamps are made of quartz glass or special glass through which UV rays can penetrate.  

Germicidal Ultraviolet Effectiveness

Principle and Character of Disinfection

Germicidal ultraviolet (UVC) light kills cells by damaging their DNA. The light initiates a reaction between two molecules of thymine, one of the bases that make up DNA. UV light at this wavelength (shortwave UV or UVC) causes adjacent thymine molecules on DNA to dimerize. The resulting thymine dimer is very stable. If enough of these defects accumulate on a microorganism's DNA its replication is inhibited, thereby rendering it harmless.

Ultraviolet photons harm the DNA molecules of living organisms in different ways. In one common damage event, adjacent bases bond with each other, instead of across the "ladder". This makes a bulge, and the distorted DNA molecule does not function properly.  

The longer the exposure to UVC light, the more thymine dimers are formed in the DNA. If cellular processes are disrupted because of DNA damage, the cell cannot carry out its normal functions. If the damage is extensive and widespread, the cell will die.

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 without second time pollution.

The typical model contain germ or bacteria (more than 18 kinds), for example, Fecal coli form, Bacillus, Escherichia coli, Kluyvera ascorbata, Tuberculosis, Neisseriaceae, Salmonellosis...etc., fungi (more than 8 kinds), for example: Penicillium, Black Fungi, Hair fungi, big muck fungi etc., virus (more than 10 kinds), for example: Hepatitis virus, flue virus, polio virus, poliomyelitis (Polio) virus...etc.

The Raw Material of Product Constitutes

1. All ABS plastics contains the anti-ultraviolet (UV) special processing.
2. “Pocket Purifier” includes 4-Watt T5 Bi-Pin Germicidal UV-C bulb (253.7nm) as core parts.
3. This portable sterilizer is multi-function and handheld type, space design reasonable, the external  appearance is elegant.