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Types of Concentration techniques:
1. Mental techniques uses formal as a preservative and ether or ethyl acetate
as a extractor of fat and debris from faces after meditation to leave the parasites
i a sediment at the bottom of the tube after centrifugation. Advantages: Recovers
most ova, cysts and larvae, Morphology of most parasites is retained, Less risk
of infection from bacteria and viruses .
Disadvantages contains debris, Some parasites do not concentrate well,
Ether is flammable and formal is a irritant, Liquid faces do not concentrate well.
Flotation uses the high specific gravity of a solution to float the lighter ova and