Explain the functionality of hot air oven, Biology

Assignment Help:

Explain the Functionality of Hot Air Oven?

Hot air oven sterilizes the object by hot dry air. It kills the microorganisms by oxidizing cellular constituents. Dry Heat is less effective in killing microorganisms than moist heat. Higher temperature for a longer time period is used with dry air because it-

(i) Has less penetration power, and

(ii) Removes moisture from microorganisms and thus interferes with coagulation of microbial proteins.

Hot air oven can be used at different temperatures. Operating time depends on the temperatures used as highlighted in Table.

Table: Relation between temperature of hot air oven and the time period of sterilization

2474_Hot Air Oven.png

You would realize that the most commonly used temperature is 160° C for 2 hours. We are all familiar with hot air ovens. Hot air oven contains an insulated cabinet kept at constant temperature by electric heating mechanism and thermostat. Air keeps on circulating within the cabinet through a fan. For proper circulation of hot air, the shelves are perforated. An oven is used to sterilize glassware, corrodeable metal instruments, powder, oil etc. which can tolerate prolonged heat exposure but get spoiled by moist heat. However, it is not suitable for heat sensitive materials, like plastic and rubber items.


Related Discussions:- Explain the functionality of hot air oven

Non - pharmacological management, Great importance is being given to life s...

Great importance is being given to life style modifications because of definite benefits observed in patients who follow this. Life style changes have advantages not only in the co

Summer stratification - thermal stratification, Summer Stratification - The...

Summer Stratification - Thermal stratification Thermal stratification is fairly pronounced during the summer seasons in most lakes of the temperate (cold) regions but is rare

Phylum platyhelmenthiese, show heading wise characteristics of phylum platy...

show heading wise characteristics of phylum platyhelmenthiese

Metabolic cataysis, Metabolic Cataysis A large number  of chemical reac...

Metabolic Cataysis A large number  of chemical reaction  occur  every  moment in a cell  to keep it. In the living  state, The rate  if  chemical  reaction normally depends upo

Composition - culture medium, Composition - Culture Medium A standard ...

Composition - Culture Medium A standard plant tissue culture medium (Basal medium) contains all the essential macro elements (Carbon, hydrogen, oxygen nitrogen, phosphorus, su

Determine the improper occlusal scheme, Improper Occlusal Scheme This i...

Improper Occlusal Scheme This is an important cause of failure as the implant are more sensitive to occlusal trauma and leads to prosthetic failure and bone loss. The susceptib

Functions of mitochondria, FUNCTION S OF MITOCHONDRIA Cell Oxidation ...

FUNCTION S OF MITOCHONDRIA Cell Oxidation - Mitochondria plays an important role in ATP synthesis during aerobic respiration. Mitochondria are known as Power house of cell b

Enumerate the term - clinical neuroscience, Enumerate the term - Clinical n...

Enumerate the term - Clinical neuroscience Clinical neuroscience concerns the study of clinical populations both to well understand neuroanatomy and to test psychological theor

What are the physiological systems, What are the physiological systems know...

What are the physiological systems known as integrative systems? Why is this designation justified? The integrative systems are the nervous system and the endocrine system. The

How plants control opening and closing of the stomata, How plants control t...

How plants control the opening and the closing of the stomata? The closing and the opening of the stomata depend upon the necessity of the plant to lose water and heat through

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