Patent ID: 6482361
Filing Date: 2002-11-19
Classification: B01L

Abstract:
A suction device for dispensing a liquid comprising a body and an associated end part, the end part having a first end and an opposite end with a cylindrical bore therebetween, the opposite end being a distal end directed away from the body and the first end being associated with the body, the suction device further comprises a reciprocable plunger in the bore and a tip enclosing a sample space, the tip being readily attachable to and detachable from the opposite end of the end part, the distal end of the end part with an attached tip being closed from the sample space with a liquid and gas impermeable, flexible, reversibly deformable membrane means, the membrane means being within reach of the plunger which can contact and deform the membrane means resulting in a change in volume of the sample space.