Abstract: The present invention relates to a device for pumping a fluid at low flows, comprising a body (1) including a channel (2) having a circular cross section for transportation of a fluid, and a cylindrical cavity (3) arranged in connection with the channel and with its longitudinal axis being non coplanar with the longitudinal axis of the channel, and a pump including a rotatable cylinder (6) extending into the cavity, coaxial with the cavity, with the periphery of the cylinder protruding into the channel, thereby driving the fluid in the channel by shear forces.

Abstract: The present invention relates to a device for controlling the flow of a fluid in a compartment (4) with an inlet opening (5) and an outlet opening (6). The device comprises an inlet channel (8) connected to the inlet opening for transportation of fluid to the compartment, an outlet channel (9) connected to the outlet opening for transportation of fluid from the compartment and a pump (17) arranged to pump the fluid. The compartment is provided with a third opening (12). The device comprises a distribution chamber (15) connected to the inlet channel and a third channel (14) connected between the distribution chamber and the third opening for transportation of fluid between the distribution chamber and the compartment.

Abstract: The present invention relates to a device for controlling the flow of a fluid in a compartment (4) with an inlet opening (5) and an outlet opening (6). The device comprises an inlet channel (8) connected to the inlet opening for transportation of fluid to the compartment, an outlet channel (9) connected to the outlet opening for transportation of fluid from the compartment and a pump (17) arranged to pump the fluid. The compartment is provided with a third opening (12). The device comprises a distribution chamber (15) connected to the inlet channel and a third channel (14) connected between the distribution chamber and the third opening for transportation of fluid between the distribution chamber and the compartment.

Abstract: An apparatus, a system and a method for the detection of an analyte in air comprising an air sampling system (1) comprising a mouthpiece (10) and a fan, a first enrichment stage (11) for enrichment of the analyte comprising a thermally regulated adsorption/desorption filter (20) creating a non-laminar gas flow for adsorption of the analyte, a heat source for heating the filter to evaporate the analyte, a second enrichment stage (30) for the further enrichment of the gaseous analyte comprising a cold trap (32) for condensing the analyte, extraction of the condensed material with a solvent, and collecting the solution, and analyzing the collected liquid sample with an analytical detection system, are disclosed. Further, an adsoption/desorption filter creating a non-laminar gas flow comprising a winding (21) of a resistance wire coated with an active material electric heating of the wire, is described. A specific application is detection of a gaseous component of explosives or mines, e.g. TNT, in air.