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•Ultraviolet light source-do- Inspissator: used to produce culture media for bacteriology that contain egg or serum, which coagulate on heating Tyndallizer: a process of sterilization from spore bearing bacteria; video link: Water bath: to heat things uniformly from all sides at a set temperature up to the boiling point of water Needle Destroyer
Within the sterilizer, water flows as close as possible to the ultraviolet light source. Water pre-filtration is critical as water turbidity lowers UV-C penetration. Many of the better UV sterilizers have long dwell times and limit the space between the UV-C source and the inside wall of the UV sterilizer device. [117] [independent source needed]
Ultraviolet (UV) light induces the formation of covalent linkages on DNA and thereby prevents microbes from reproducing. Without reproduction, the microbes become far less dangerous. Germicidal UV-C light in the short wavelength range of 100–280 nm acts on thymine, one of the four base nucleotides in DNA.
A germicidal lamp (also known as disinfection lamp or sterilizer lamp) is an electric light that produces ultraviolet C (UVC) light. This short-wave ultraviolet light disrupts DNA base pairing , causing formation of pyrimidine dimers , and leads to the inactivation of bacteria , viruses , and protozoans .
Eniware, LLC has developed a portable, power-free sterilizer that uses no electricity, heat, or water. [39] The 25 liter unit makes sterilization of surgical instruments possible for austere forward surgical teams, in health centers throughout the world with intermittent or no electricity and in disaster relief and humanitarian crisis situations.
A second approach uses stored solar electricity from a battery, and operates at night or at low light levels to power an ultraviolet lamp to perform secondary solar ultraviolet water disinfection. Solar thermal water disinfection uses heat from the sun to heat water to 70–100 °C for a short period of time. A number of approaches exist.
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