Abstract: The invention provides a micro fluid device comprising a substrate with a channel forming a receiving cavity, an outer chamber, and an inner chamber, the device further comprising a multi lumen hose with a free end portion which is fixed in the receiving cavity. The multi lumen hose forming a first conduit and at least one second conduit located radially offset from the first conduit, and the outer chamber is in fluid communication with at least one second conduit, and the inner chamber is in fluid communication with the first conduit. The chambers are separated by an inner sealing member located between the substrate and the hose. To simplify the manufacturing of the device, the channel is formed by a groove in an upper surface of a body of the substrate, which groove closed by an essentially plane cover which is sealed to the upper surface.

Abstract: A system for analysing a fluid, the system comprising a base station, an analysing unit being remote from the base station, and a substance collecting device being remote both from the base station and from the analysing unit, a first fluid communication link for communicating fluid between the base station and the analysing unit, and a second fluid communication link for communicating fluid between the analysing unit and the substance collecting device, wherein the analysing unit comprises sensing means adapted to provide data representing a content of a substance in the fluid and wherein the base station comprises data processing means being adapted to process the data to provide information regarding the content of the substance in the fluid.

Abstract: A flow system, preferably a micro fluidic system, having a base part (4) with at least one flow path formed therein and a lid part (5) being attached to the base part (4) in such a manner that it covers the flow path(s). The flow path(s) comprise(s) a flow restrictor (1) and a flow channel comprising an inlet section positioned immediately upstream relatively to the flow restrictor (1). At least the inlet section of the flow channel has a cross section defining at least two distinct depths of the flow channel. This may be achieved by defining a centre section (3) and at least one peripheral section (2), the centre section (3) having a depth and a width which are substantially larger than the depth(s) and width(s) of the peripheral section(s) (2). If air bubbles are formed in the system this design of the inlet section will allow a flow of liquid to enter the shallower parts of the flow channel, while the air bubbles are confined to the deeper parts of the flow channel.

Abstract: In a capillary carrier with an inlet and an outlet, a channel is formed and extends between the inlet and the outlet. At least one capillary tube is arranged within the channel, and sealing elements, by which the capillary tube is sealingly fixed to the channel, are arranged at least near an inlet portion and an outlet portion of the capillary tube. An area is formed limited by a part of the channel, the sealing elements and the exterior of the capillary tube, which is in connection with the exterior of the carrier through a fluid communication pad, whereby a possible fluid leak across the sealing elements will be led to this area, and from there to the exterior of the carrier.