摘要:
A process for the qualitative and/or quantitative determination of an analyte in a sample. The process includes providing a sample containing an analyte of interest in a liquid phase, providing at least one reagent having super-paramagnetic reactive metal particles linked to a substance that binds to the analyte, contacting the sample and the reagent to allow binding of the analyte in the sample and the reagent, applying a magnetic field to the mixture of sample and reagent, and detecting the presence of the analyte in the sample. The device includes a support for the sample and reagent, means for contacting the sample and reagent, magnetic means for confining and separating the analyte from the other components of the sample, and detection means for qualitative and/or quantitative measurement of the analyte.
摘要:
An improved sample card is provided. The improved card, typically used in biochemical analysis, achieves high sample well capacity and improved fluid flow, including by means of a plurality of through-channels which route the fluid flow of samples along both the front and back surfaces of the card. Elevated bubble traps are provided, as are integral interrupt slots for sensing card position and alignment. A bezeled leading edge facilitates insertion.
摘要:
An improved sample card is provided. The improved card, typically used in biochemical analysis, achieves high sample well capacity and improved fluid flow, including by means of a plurality of through-channels which route the fluid flow of samples along both the front and back surfaces of the card. Elevated bubble traps are provided, as are integral interrupt slots for sensing card position and alignment. A bezeled leading edge facilitates insertion.
摘要:
A capillary cavity is provided in communication with a liquid bath container. The cavity is metered with a predetermined quantity of a liquid by a process that includes: (a) providing at least one capillary cavity, which outwardly emerges via an introduction orifice and is dimensioned such that the liquid cannot enter or leave the cavity spontaneously; (b) providing a bath of the liquid; (c) evacuating the cavity, initially free of any liquid, in order to bring its internal pressure to a value that is less than a pressure prevailing above the liquid bath; (d) connecting the interior of the capillary cavity, which is at least partially evacuated, to the liquid bath via the introduction orifice, thereby filling the cavity; (e) separating the filled capillary cavity from a remainder of the liquid bath; (f) emptying the capillary cavity which is filled and separated from the liquid bath via the introduction orifice. The method and device have applications including, for example, diluting a precise amount of liquid with a diluent.
摘要:
The aim of the present invention is a method of sampling all or part of a sample (11) of biological matter (7), which is crude, enriched or cultured through contact with a culture medium (8), such as agar, for example in a Petri dish, using a probe (3) equipped with a terminal end (4), said sampling method comprising the steps of cooling the terminal end (4) of the probe (3), sticking all or part of the sample (11) of biological matter (7) to be sampled through contact, or by applying a pressure exerted by the terminal end (4) onto the sample (11) of biological matter (7), and sampling of all or part of the sample (11) of biological matter (7) so as to separate the sample (11) of biological matter (7) from the culture medium (8), a method of depositing into a container (9) or onto an analysis plate (14) all or part of a sample (11) of biological matter (7) stuck onto a frosted terminal end (4) of a probe, said depositing method including a step of separating the terminal end (4) of the probe (3) from all or part of the sample (11) of biological matter (7), as well as a device (2), a kit and an apparatus (1) implementing these methods.
摘要:
The present invention relates to a method for inoculating at least one agar culture medium, contained in a Petri dish, with at least one sample likely to contain microorganisms. The method includes the steps of: providing at least one agar culture medium contained in a Petri dish; providing the sample likely to contain microorganisms in liquid form; performing at least one deposition of the liquid sample onto the lid of the Petri dish such that the liquid sample can be transferred from the lid to the agar culture medium; and spraying the liquid sample, initially deposited onto the cover, onto the agar culture medium by vibrating the Petri dish.
摘要:
The invention relates to a method for isolating at least one fluid sample well laid out in a test card for analyses, said test card including a plate (3) having at least one first main face from which is laid out at least one channel communicating with at least said well, this first face being coated with a membrane (17) provided with an adhesive (18) and which will cover said channel with a covering area (171), the method for isolation including a phase for introducing a fluid sample into at least said well and a phase for isolating said well consisting of exerting a force on at least one portion of the covering area (171) of the adhesive membrane (17) for ensuring displacement of the adhesive into an obturation area for the sample well.
摘要:
An instrument for conducting nucleic acid amplification reactions in a disposable test device. The test device includes a first reaction chamber containing a first nucleic acid amplification reagent (e.g., primers and nucleotides) and a second reaction chamber either containing, or in fluid communication, with a second nucleic acid amplification reagent (e.g., an amplification enzyme such as RT). The instrument includes a support structure receiving the test device. A temperature control system maintains the first reaction chamber at a first elevated temperature but simultaneously maintains the second nucleic acid amplification reagent at a second temperature lower than the first temperature so as to preserve the second nucleic acid amplification reagent. An actuator operates on a fluid conduit in the test device to place the first and second reaction chambers in fluid communication with each other after a reaction has occurred in the first reaction chamber at the first temperature. A pneumatic system is also provided that assists in fluid transfer of a reaction solution from the first chamber to the second chamber.
摘要:
A device for implementing a test card inside which sequential reactions and fluid transfer operations are performed under the effect of a control integrated into the card; the card includes at least two sequential reaction systems arranged in parallel, each reaction system having at least two fluid transfer systems arranged in series. A test card and the method for implementing the device and the card are also disclosed. The device contains at least one actuator per reaction line, and all the actuators are at a regular distance from one another, with the actuators preferably being equidistant. The invention is particularly applicable for the micromanipulation of fluids in biological applications.