Formol ether concentration technique (FEC)

MC Mamoudou Cisse
IS Ibrahim Sangare
AD Arthur D. Djibougou
MT Marc C. Tahita
SG Souleymane Gnissi
JB Jonathan K. W. Bassinga
SK Salifou Konda
AD Abdoulaye H. Diallo
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After diluting a small amount of stool (about 2 g) in 7 ml of 10% salt formalin solution (mixture of 100 ml pure formalin, 900 ml distilled water and 8.5 g sodium), the mixture was sieved in a centrifuge tube to remove large debris, and 3 ml of ether was added to it. The mixture was stirred vigorously for 30 s and centrifuged at 2000 rpm for 2 min. Then, the supernatant was discarded and the pellet was plated, using a pipette, between a slide and coverslip with lugol and read under a light microscope using 10× and 40× objectives [29].

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