A device for diluting and mixing a liquid sample

摘要

A diluting and mixing device has a piston part (7) and a cylinder part (8). An axial bore (10) through the piston part is adapted to receive a tube (1) containing a liquid sample. An upper portion of the bore forms a first mixing chamber (12). A closed end of the cylinder part (8) defines a receptacle (15) for a diluting liquid (D) and a second mixing chamber. Movement of the piston part (7) within the cylinder part (8) towards its closed end forces diluting liquid (D) from the receptacle (15) through the bore towards the first mixing chamber (12) thereby flushing through a tube (1) positioned in the bore (10) to mix in the first mixing chamber (12) with a sample (S) displaced from the tube. Movement of the piston part (7) away from the closed end causes flow of diluted sample through the bore past the tube towards the second mixing chamber (15).