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

Explain negative staining technique, Explain Negative Staining Technique? ...

Explain Negative Staining Technique? Here, a stain has a negatively charged chromophore that is repelled by the negative bacterial surface. It results in indirect staining of m

Explain food applications of gum tragacanth, Food Applications of Gum traga...

Food Applications of Gum tragacanth Gum tragacanth finds various food applications. These include: In dairy products, it functions as stabilizer in ice cream, ice pops a

Define the term ancestral characteristic, Define the term Ancestral charact...

Define the term Ancestral characteristic A character shared by all members of a taxonomic group of organisms (taxon) and used to define the unique nature of the group. The cha

Define limitations of agar syringe or agar sausage method, Define Limitatio...

Define Limitations of Agar Syringe or Agar Sausage Method? (i) It is applicable to surfaces with low contaminants. (ii) Problem of spreading colonies may occur. (iii) Col

Anthropodes, advantages of cuticle of anthropodes

advantages of cuticle of anthropodes

Hibernation and aestivation, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Agro industrial-complete feed blocks, Complete feed blocks For manufac...

Complete feed blocks For manufacturing the pellets, processes such as grinding, mixing, steaming and pressing and some times extruding, are applied using special and expensive

Does the fish heart pump venous or arterial blood, Does the fish heart pump...

Does the fish heart pump venous or arterial blood? The venous blood coming from the tissues enters the atrium and passes to the ventricle that then pumps the blood towards the

Zygote and fecundation formation occur in these plants, Q. How do zygote an...

Q. How do zygote and fecundation formation occur in these plants? Do these processes depend on water? The microsporangia in the male strobile rupture at the right time of the y

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