Original sentence: In addition the substance that is to pass through the filter must be a fluid, i.There are two main types of filter media —  surface filter, a solid sieve which traps the solid particles, with or without the aid of filter paper (e.This is achieved by some form of interaction between the substance or objects to be removed and the filter
Edited sentence: Filtration is a traditional technique in the laboratory.Methods vary depending on the location of the targetted material, i.Separation is achieved by some form of interaction between the substance or objects to be removed and the filter.The substance that is to pass through the filter must be a fluid, i.Two main types of filter media are employed in the chemical laboratory—  surface filter, a solid sieve which traps the solid particles, with or without the aid of filter paper (e.whether it is in the fluid phase or not