Several types of steam sterilizer, Biology

Assignment Help:

The several types of steam sterilizers that are in use.

1. Lab Autoclave

2. Hospital dressing sterilizer

3. Bowl & instrument sterilizer

4. Rapid cooling sterilizer

Parameter:

121OC (250O F) for 15 minutes at 15 psi or 132OC (270O F) for 3-7 mins at 30 psi (flash sterilization) for unwrapped instruments.

Add 5 minutes for moderately wrapped packs.

The typical dental office steam sterilizer usually operates through 4 cycles:

  • The heat up cycle
  • The sterilizing cycle
  • The depressurization cycle
  • The Drying cycle

After adding the water one loads the chamber, closes the door & turns on the unit & the heat up cycle begins to generate steam.

The steam pushes out the air in the chamber (in a gravity steam sterilizer ) or a vacuum is drawn (in a vacuum steam sterilizer ) & when the set temperature is reached, the sterilization cycle begins. The sterilizer maintains the temperature for the set time, usually ranging from 3-30 minutes. At the end of the sterilizing cycle, the depressurization cycle begins & steam is slowly released, with decrease in temperature & pressure. At the end of this cycle, all the items inside are wet & the drying cycle is initiated. Most steam sterilizer manufacturers  provide drying instructions & some even may have a programmed closed door or open during cycle.

Some sterilizers have a post sterilizer vacuum cycle to facilitate drying. Other steam sterilizers pull in fresh air through a microbial filter. Others have an automatic open door drying cycle that maintains  the heat inside chamber to evaporate the remaining water but the chamber is opened to the air so that water vapour can escape and items can dry.

The cooling of the warm pack should be done slowly to avoid the formation of condensation on the instruments. One should not place warm packs under air conditioning or cool air vents.


Related Discussions:- Several types of steam sterilizer

What is the phase of the menstrual cycle, Q. In general what is the phase o...

Q. In general what is the phase of the menstrual cycle when copulation may lead to fecundation? Although this is not a rule, to be effective fecundation in general must occur w

Define the first step to envision the pattern of deformation, Define the fi...

Define the first step to envision the pattern of deformation. The first step in the analysis is to envision the pattern of deformation that would accompany such a failure. In t

Acid rain, What direct or indirect effect is acid rain thought to have on m...

What direct or indirect effect is acid rain thought to have on mama''s and forest and buildings

Define about the nutrition, Define Nutrition, Diet and Cancer? In this,...

Define Nutrition, Diet and Cancer? In this, we will discuss the common forms of cancer, how they develop, relevant etiological factors, pathological/metabolic changes and other

What does secondary productivity in an ecosystem indicate, a) What does sec...

a) What does secondary productivity in an ecosystem indicate? b) List any two factors by which productivity is limited in aquatic ecosystems

Positive and negative regulation, Normal 0 false false fals...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 The lac operon is an

What is biotechnology, What is biotechnology? The Biotechnology is the ...

What is biotechnology? The Biotechnology is the application of biological knowledge to obtain new techniques, materials and compounds of pharmaceutical, medical, agrarian, indu

Explain the basic concept of adulteration, Explain the Basic Concept of Adu...

Explain the Basic Concept of Adulteration? Food adulteration is the change in original composition and quality of food by adding, removing or substituting some ingredients of f

Respiratory system - developmental changes, Respiratory System - Developmen...

Respiratory System - Developmental Changes after Birth The new-born's lungs are collapsed and need powerful breaths to inflate them; airways too are small, offering remarkable

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd