Explain membrane filtration technique, Biology

Assignment Help:

Explain Membrane Filtration Technique?

Another method used for determining the bacterial number is the filtration technique. The margain figure illustrates the membrane filter assembly. This technique can be used to know the microbial count in liquid samples containing relatively very small quantity of microbes. Both viable and total counts can be obtained. A known volume of the sample is passed through a special membrane filter having pores small enough to trap bacteria and other microbes. For viable count, the membrane filter is placed over the agar medium surface or over a pad soaked in liquid medium and incubated for 24 hours. Each cell trapped form a separate colony. The numbers of colonies, then formed, indicate the number of microbes present in the volume of sample, which is drawn through a membrane filter. The colonies are counted by hand or by using quebec colony counter.


Related Discussions:- Explain membrane filtration technique

What are compound eyes, What are compound eyes? Arthropods have compoun...

What are compound eyes? Arthropods have compound eyes made of many visual units called ommatidia. Every ommatidium transmits visual information by the optic nerve to the brain,

Explain exposure assessment, Exposure  assessment Estimates of dietary...

Exposure  assessment Estimates of dietary intakes of food additives, residues of pesticides and veterinary drugs and contaminants require information on the consumption of rele

Define drug effects on metabolism of dietary components, Define Drug effect...

Define Drug effects on Metabolism of dietary components? Drugs can also compete with, or inhibit, the metabolic conversion of some micronutrients to their active metabolites,

Dicots, Dicots are one of the two main types of flowering plants; characte...

Dicots are one of the two main types of flowering plants; characterized by having two cotyledons, floral organs arranged in the cycles of four or five, and leaves with the reticul

Can stroke be prevented, Can stroke be prevented Brain experts are conv...

Can stroke be prevented Brain experts are convinced that several strokes can be prevented with proper attention to lifestyle factors which increase risk, including smoking, exc

Cell surface junctions, CELL SURFACE JUNCTIONS (1 )      Desmosomes (...

CELL SURFACE JUNCTIONS (1 )      Desmosomes (Maculae adherence) - Thickened circular areas on P.M. of adjacent cells with radiating fibrils in cytoplasm. These fibrils calle

What is biodiversity, Q. What is biodiversity? The Biological diversity...

Q. What is biodiversity? The Biological diversity is the variety of species of living beings of an ecosystem. In the ecosystems which are more biodiverse, like tropical forests

Explain haemophilus influenzae, Haemophilus influenzae type b (Hib) Hi...

Haemophilus influenzae type b (Hib) Hib is endemic worldwide. Previously unvaccinated infants

What is gluconeogenesis, What is gluconeogenesis There is accumulation ...

What is gluconeogenesis There is accumulation of lactate, which is released into the blood and taken up by  the liver where  it  is converted to glucose by  the  process called

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