Abstract: A device intended to facilitate the taking of excretal biological specimens while eliminating the risk of contamination of the collected biological sample. The collected biological sample may be a urine sample or a stool sample. The device is characterized in that it comprises a flask with an open top end sealingly capped by a first cap, and a closed bottom capped by a second cap, the second cap being intended to seal the open top end after removal of the first cap and after introduction of the biological sample into the flask. An outer collar about the flask excludes contamination from the bottom cap during collection of the sample. The flask has an attachable handle. The handle has a flat tongue provided with a wide, longitudinally extending aperture for preventing drops of the sample from reaching the fingers of a person holding the flask.