The pipette (1) to store small vols. of substances, and especially biological material, has a tubular section (2) with a perforated inert (3) within it, with a coaxial opening (4) through it. The insert (3) is of an elastomer, thermoplastic or thermoplastic elastomer material, or it is of metal. The passage through the insert is closed by a plug (5).Paillette (1) pour la conservation de petites quantités de substances, notamment de substance biologiques, se composant dun segment de tube (2) muni à lintérieur de lune de ses extrémités dun insert (3) percé dun orifice sensiblement coaxial (4), linsert étant un tube capillaire.