Heat Sterilization And Disinfection Development
Disinfection and dental instrument sterilization methods available in all of the heat is an application of the earliest , most reliable results , the most widely used methods. Heat can inactivate all microorganisms, including bacteria, fungi, viruses, and strong resistance to most bacterial spores before . Therefore , not only the thermal disinfection and sterilization is widely used in medicine and in industry are sterilized by attention.
Human thermal disinfection, sterilization and antisepsis has a long history , primitive and ancient people already knew how to use fire to heat food , have prevented its corruption. After entering the Middle Ages , people used fire to burn the patient’s clothes and body, to prevent epidemic diseases.
1718 , Joblot boil for 15 minutes with a reagent sterilization methods , and then enclosed in a container .
Later , Appert (1810) developed a method using heat sterilization of food and stored in an airtight container , similar to canned food now . 1832 , Henry found that the higher the heating temperature , the greater the bactericidal power .
In 1876 , Tyndall invented the intermittent AUTOCLAVESALE sterilizing tattoo equipment sterilization . 1880 , Chamberland developed autoclaving .
1881 , koch compared 117 ℃ heat and dry heat sterilization , noting that the heat resistance of the bacteria in the presence of water vapor conditions exist vary widely. The same year in the case of water vapor saturated and unsaturated Effect of sterilization , Kinyoun (1888) suggested that when using autoclave sterilization , if the exhaust air before trying to pass steam sterilizer within it is close to vacuum , then sterilization is easy to succeed , this is called “pre- vacuum .”
In 1897 , Kinyoun developed a sandwich autoclaves, sandwich filled with steam to maintain high humidity , combined with pre-vacuum , so sterile easy to dry. Underwood (1915) envisaged in the exhaust pipe mounted on the autoclave , a steam sterilizer enter the encounter article to be sterilized , heat is absorbed , the proportion of steam increases with the temperature drop through the upper saturated steam sterilizer when the temperature is low due to the relationship between the proportion of the steam to move along the lower portion , as mounted on the bottom of the exhaust pipe disinfection , the heavier water vapor is drawn or conducive to the flow of steam . Kinyoun this idea to practical . After the autoclave was further improved to 1933 Underwood complete the basic structure of a high voltage used today .
Zinsser dry heat sterilization have been studied and found that the insulating effect of the packaging material can lower the local temperature of the object , so that the sterilization failure.Stay tuned on http://www.autoclavesale.com/ .
1939 VallerRadot established a dry heat sterilization , dry heat sterilization raised temperature should not be less than 150 ℃, reaction time should be 30 minutes or more. These studies on the application of heat sterilization and disinfection has played a significant role in promoting .