Complete Guide: All You Need to Know About Filtration

Filtration is the best method there is for the sterilization of hot and sensitive liquids. And in this guide, we are going to look at the type of filters available, the working principle of filtration, as well as its advantages and disadvantages over other types of sterilization methods.

Working Principle of Filtration

Filtration is the only type of sterilization method that kills bacteria. This is done when the microorganisms are removed from a sterilized medium using membranous filters. The pore spaces on the filter will give room for the liquid to pass but are not big enough for the passage of the bacteria, hence the bacteria will be separated. However, the effectiveness of most filtration process has to do with the size of the pore spaces in the membranous filter. The smaller the pore space, the more the number of microorganisms can be separated from the liquid medium. Buy PES syringe filterfor effective filtration procedures due to the small holes that are impermeable for microorganisms.

There are four different filter types and they include:

Membrane Filters

These type of filters are thin and mostly made of cellulose. They are commonly used in hospitals and health centers for sterilization process during injection. This is done by placing the membrane between the syringe and the needle. Ensure you buy sterile syringe filters to keep the medium clean.

Seitz FiltersThese filter types are thicker than the membrane filters. They are usually made of asbestos, hence they have a pad like structure.

Sintered Glass FiltersThese type of filters are unable to absorb liquid during filtration, and this is due to the glass material which they are made from.

Candle filtersThese filters perform an excellent job in the trapping of microbes. They are made of clay materials that have small algae pores.

Techniques of FiltrationThere are various techniques of filtration based on their specific application. However, the most common filtration technique that is used in homes is the osmosis technique. Other types of filtration technique that are used include the following: Nanofiltration, ultra-filtration, microfiltration, and particle filtration. Advantages of FiltrationSo what are the advantages that filtration techniques have over other types of sterilization processes? They include the following:

Filtration technique is the cheapest type of sterilization process and is more affordable by all and sundry. The only expensive filtration types are those that make use of the smallest types of pore sizes

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Filter types do not clog easily, and this makes them last for a very long time

The filters are also not affected by heat, hence they are effective for very hot liquid samples that need to be sterilized

A large quantity of liquid can be filtered quickly

Disadvantages of FiltrationIn the same vein, some of the demerits of filtration include the following:

Filtration is not suitable for gaseous samples

Glass filters are very fragile and can break easily

Membrane filters tend to get ruptured easily

For Seitz filters, a good volume of the solution might get absorbed by the pad.

You can buy PES syringe filter online for health center uses, as they are very effective in the sterilization of liquids.

This article discusses the basic things you should know with regards to membrane technology. It briefly discusses the concept and benefits that a laboratory can get.