Which of the following methods is used for separating parasites from fecal debris?

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Flotation techniques are commonly utilized for separating parasites from fecal debris due to their ability to exploit differences in buoyancy between the parasites and the fecal matter. In this method, a specially prepared solution with a specific gravity that is higher than that of the fecal debris is used. When the fecal sample is mixed with this solution, the lighter parasitic forms rise to the surface, while the denser debris sinks to the bottom. This allows for effective separation and isolation of the parasites for further microscopic examination.

Flotation techniques are particularly useful in identifying various parasitic forms, such as protozoa and helminths, making them a preferred choice in clinical laboratories working with gastrointestinal samples. The effectiveness of this technique hinges on the physical properties of the parasites compared to the surrounding material, which is precisely what makes it an optimal method for this purpose.

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