Filtration is removal of particles from fluid by passing it through a permeable media. The device used to achieve this is known as a filter. The range of fluids used in chemical processing covers a vast spectrum from paint to food, to fine chemicals. Each filter has its own merits and demerits and is applicable for a certain filtration range; some can be used as pre-filters while some have very good dirt holding capacity. Any single type of filter may not be suitable for the removal of different types of contaminants and that too of wide particle size range. Large variety of disposable filters are available like melt blown filters, cartridge filters, pleated filters, spun bonded filters etc. Hence filters produced with different techniques are available from which to choose as per requirement of the process and different types of filtration procedures for testing them. This paper gives a review of the popular category of disposable filters available in the market with their application range.
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