EFFICIENCY OF STEAM UNDER PRESSURE

Sterilization power of steam under pressure

Sterilization power of steam under pressure is because the temperature it poses above 100 ºC and the condition when cool. Wet object give it potential of transferring it latent heat of evaporation there by cause rise in it temperature. On condensation there is change in volume of the steam thus allowed the penetration of the steam and the coagulation of protein take place at the moisture environment. This are the phenomenon that account for the power of the way to get sterilization at a much lower than that temperature required by dry technique.

Autoclave used in the laboratory is constructed as a version of that domestic pressure cooker. In the pressure cooker heat is generated by applying heat inform of gas or electricity to that of little volume of water contained within the covered body of the apparatus. All accumulated air in the autoclave must be expel before it been brought to sterilization pressure, the reason is that pressure are read from pressure gauge this is used as a security to the steam in the most sample method.

The relationship for sterilization using autoclave it only depend on, if the environment is purely of steam for example 5pis achieved it sterilization at 110 ºC 10pis achieved it sterilization at 115 ºC 15pis achieved it sterilization at 121 ºC and 20pis achieved it sterilization at 126 ºC. now for instance the autoclave contain a half air such that half steam 15pis produce a temperature of 112 ºC will take  a longer hours like 12 hour before perfect sterilization can be achieved, compare to that of 15pis at 121 ºC which the sterilization is achieved within short time range of 20 to 30 minute.

See also  Spectroscopy

The purpose of unravel the air captured in the pocket is that accumulated is act as a hot air and hot air is low in their temperature in such case render the sterilization impossible. Also the same thing happen when air is completely dry such as that occur in a steam jacked autoclaves when there is high concentration of air in the jack than in the vessel such steam is known as supper heated.

With this consequent, make larger laboratory autoclave mostly depend on external steam supply. The steam is introduce to the pressure channel via valve and baffle plate. The steam outlet valve of the autoclave is situated at the bottom while the thermocouple is inserted in this point it allowed the measurement of direct temperature when different step is taken at the top of the autoclave these channel are mounted with a pressure gauge and a safety valve are found on the top. You can get important information of how the apparatus work by comparing the pressure and the temperature reading.

Porous load high temperature steam sterilizer, this is one of the popular autoclave in the hospital all around the worlds. The significance of this autoclave is for achieving sterilization of porous substance or materials like towels, surgical dressing etc. the autoclave is fitted with vacuum system this system is to make sure that all air is remove before sterilization in other to prevent the condensation of the steam back to the material during coaling and allowed the load to be excluded from the autoclave in a dry condition.

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