Abstract:
A supply arrangement includes a supply reservoir element and a microfluidic device, wherein the supply reservoir element has a first reservoir unit having a prefilled liquid reagent therein, and the microfluidic device has a reception device adapted for receiving the liquid reagent from the first reservoir unit. The supply reservoir element is coupled to the microfluidic device. One of the supply reservoir element and the microfluidic device includes a puncturing element in order to cause fluid flow of the liquid reagent from the first reservoir unit to the reception device when the puncturing element is operated. The supply reservoir element has a basal plane, and the first reservoir unit has a first blister element arranged on the basal plane.
Abstract:
A pump unit comprises a primary piston pump, a secondary piston pump, and a flow path adapted for fluidically connecting in series the primary piston pump and the secondary piston pump. The pump unit's duty cycle comprises a delivery-and-fill phase, in which the primary piston pump supplies a flow of liquid to the secondary piston pump, and during the delivery-and-fill phase, the flow of liquid supplied by the primary piston pump is partly used for filling up the secondary piston pump and partly used for maintaining another flow of liquid dispensed across the secondary piston pump. The flow path comprises a heat exchanger, wherein liquid supplied by the primary piston pump passes through the heat exchanger before being supplied to the secondary piston pump. The heat exchanger is adapted for reducing a temperature difference between a temperature of liquid supplied to heat exchanger and a temperature of the secondary piston pump, in that the heat exchanger is kept at a temperature of the secondary piston pump, so that after having passed the heat exchanger, liquid supplied to the secondary piston pump has substantially the same temperature as the secondary piston pump itself.
Abstract:
A liquid delivery system having at least one channel, at least one valve within that channel, at least one flow sensing device within that channel, and a pressure source downstream of the valve capable for generating variable pressures.
Abstract:
A microfluidic arrangement (1) for the optical detection of fluids is provided, comprising a microfluidic device (2) having at least one first channel (3) with an opening (4) which is in fluid communication with an optical detection unit (6) of an optical device (5); the microfluidic device (2) being operatively detachably coupled with the optical device (5) whereby an extension of the part (7,7′) of relevance of the optical detection path (17) is provided. A method for detecting fluids using the arrangement of the present invention is provided.
Abstract:
A liquid transfer appliance and a well plate are moved towards each other and a current is detected that flows upon contact between the liquid transfer appliance and a first electrically conductive element of the well plate. The position of the well plate relative to the liquid transfer appliance is determined at the time of contact. The determined position is used as a reference position for further positioning at least one of the well plate and the liquid transfer appliance.
Abstract:
Methods and devices for delivering fluids into microfluidic device body structures (112, 202, 316, 508) are described. The methods and devices include the use of fluid manifolds (200, 300, 400, 500) which are integrated or interchangeable with device body structures. Methods of fabricating manifolds are also provided.
Abstract:
Disclosed is a mixing apparatus where a fluid is progressing from an Inlet tubing to an Outlet tubing. Every segment of the liquid is part by part transferred to the Outlet channel via numerous restrictor channels. The distances between the restrictor channels determine a dispersion pattern for any segment of the flow, progressing from the inlet chamber in the form of a reservoir channel to the Outlet. The nearer the outlet channels are placed one to another, the higher is the permeability to the outlet collector at the respective location. Delaying partial flows of the fluid with different flow delays and providing different flow volumes for the partial flows results in a predetermined flow distribution function thus determining a dispersion pattern. This allows for a continuous dispersion of a fluid property which is intended to be mixed, in accordance with a predefined fluid distribution function.
Abstract:
A method of reducing baseline instabilities in liquid chromatographic measurements is disclosed. A mobile phase comprising sample substances passes through a chromatographic column comprising a stationary phase, and subsequently through a detector. An additional solid body or liquid bath having a high heat capacity and heat conductance is coupled to the column and to an inlet capillary of the column such that the inlet capillary and the column are enclosed by said solid body or liquid bath. In that way temperature stabilization of the column and inlet capillaries is achieved and baseline variations due to temperature dependent adsorption of water at the stationary phase, in particular stationary phases with amino functional groups, are reduced.
Abstract:
A fluidic chip device configured for processing a fluid, wherein the fluidic chip device comprises a plurality of layers laminated to one another, wherein at least a part of the layers comprises a patterned section of an alternating sequence of bars and fluidic channels for conducting the fluid under pressure, the patterned section being configured for being displaceable in response to the pressure, and a pressure detector responding to the displacement of the patterned section by generating a detector signal being indicative of a value of the pressure.
Abstract:
A sample separation device for separating a sample comprises a first fluid supply path for supplying a first fluid, a second fluid supply path for supplying a second fluid, a sample separation unit adapted for separating the sample, a sensor configured for determining a value of a parameter related to the fluid, and a valve configured for selectively coupling both of the first and second fluid supply paths to the sensor and to the sample separation unit, or coupling one of the first and second fluid supply paths to the sensor.