Shaft for a sampling pipette

Details Shaft for a sampling pipette Shaft for a sampling pipette

B - Operations, Transporting

01

L

B01L 3/02 (2006.01)

Patent

CA 2598337

A shaft for a sampling pipette includes a first cylindrical portion, a first annular shoulder, and a second annular shoulder. A first cross section of the first cylindrical portion has a first diameter. The first annular shoulder includes a first transition end adjacent the first cylindrical portion and a second cylindrical portion. A second cross section of the second cylindrical portion has a second diameter. The second annular shoulder includes a second transition end adjacent the first annular shoulder and a third cylindrical portion. A third cross section of the third cylindrical portion has a third diameter. The third diameter is greater than the second diameter which is greater than the first diameter. The second diameter and the third diameter are selected so that a pipette tip contacts the second cylindrical portion and the third cylindrical portion when the pipette tip is mounted on the shaft.

Embout pour pipette de prélèvement dont la partie terminale (2) sensiblement tronconique ou cylindrique est destinée à recevoir par emmanchement un cône de prélèvement (3), caractérisé en ce que ladite partie terminale comporte au moins deux épaulements annulaires (5, 6) aux niveaux desquels le diamètre de ladite partie terminale (2) diminue en direction de l'extrémité inférieure (8) de l'embout, et en ce que lesdits épaulements procurent à leurs niveaux une diminution du diamètre de ladite partie terminale (2) de 0,2 à 2mm, préférentiellement 0,3 à 1,8mm. Pipette de prélèvement comportant cet embout.

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