A simplified system for air sample collection and analysis for the presence of airborne pathogen is disclosed. An extraction device is used for extracting biomaterial previously deposited on the surface of a capture element of a sampling device, the capture element being of a select cross section and size. The extraction device comprises an upwardly opening head being wider at a top and narrower at a central opening at a bottom. An elongate cavity is attached to the enlarged head at the bottom extending downward from the head and closed at a bottom end to define an interior space, the cavity having a cross section corresponding to the cross section of the capture element and of a slightly larger size than the size of the capture element. An extraction fluid is in the cavity interior space. In use, insertion of the capture element through the head into the elongate cavity extrudes the extraction fluid liquid through the interface between the head and the elongate cavity and provides a fluidic shearing force that serves to solubilize biomaterial from the surface of the capture element.

A single-use chamber comprising a primary subchamber containing at least one primary component configured to perform an operation comprising at least one of generation and handling of a biological material; and a secondary subchamber containing at least one of a connection to equipment external to the single-use chamber and a secondary component, wherein the external equipment and the secondary component are configured to support the operation of the at least one primary component; wherein the primary subchamber and the secondary subchamber are configured to be connected to each other so that the at least one primary component is operatively coupled to at least one of the connection and the secondary component.

Disclosed are multi-well plate inserts that can be used to separate solid debris, including paper punch containing a blood sample, from a liquid containing target biological molecules, such as nucleic acid molecules and proteins. Also provided are methods of using the insert, for example as part of a method that analyzes target biological molecules.

A kit for centrifugal isolation of a fraction of interest from a multi-component composition according to density, comprising: a separation chamber (200) having an inlet (210) for introducing the multi-component composition and a base through-hole (220); characterized in that the separation chamber (200) comprises: an inlet section (211) communicating with the inlet (210), a base section (212) communicating with the base through-hole (220), wherein the inlet section (211) and the base section (212) communicate with each other via a necked duct (230) for detaching the inlet section (211) and the base section (212) at the necked duct (230), wherein the separation chamber (200) has a form of a syringe in which the inlet of the separation chamber (200) is connectable with an extension nozzle or needle (215) for drawing the multi-component composition, and wherein the kit further comprises a plunger (240) for embedding and being slidably moved within the base section (212) of the separation chamber (200), wherein the plunger (240) comprises a plunger handle (242), removably attached to a plunger base (241), for sealing the base through-hole (220), and wherein the diameter of the necked duct (230) lumen is selected so as to maintain the multi-component composition, after detaching the inlet section (211) and the base section (212) at the necked duct (230), in the inlet section (211), by virtue of a partial negative pressure created within the inlet section (211) when the inlet (210) is sealed.

An assay cartridge for detecting a target component in a liquid sample is provided. The cartridge comprises: a sample collection unit configured to introduce the liquid sample into the cartridge; a fluid pathway commencing at its proximal end at the sample collection unit and extending distally through the cartridge including: one or more capture components immobilised within the fluid pathway; one or more detection reagents provided within the diffusion distance of the capture components.

Magnetic beads having cell components of interest are translated between a sequence of processing wells in a tray without need for pipetting. The circular tray contains one or more sequences of wells each interconnected by a respective channel. The tray is rotated about a central axis and a magnet, an agitator, and a heater provided external to the tray enable magnetic bead translation, mixing, and incubation, respectively. The magnet proximate a well forms a cluster of beads. Manipulation of the tray in rotation and elevation results in translation of the cluster from one well, through a channel, and into an adjacent well. The well containing a cluster may be rotationally positioned in front of the agitator, the agitator extended into contact with the well, followed by mechanical agitation. The heater, disposed beneath the tray, may accept a well lowered thereto for selective heating.

A device for preparing a blood sample, including a microfluidic card including: a first chamber for separating and/or extracting proteins to be analyzed that are present in the blood sample; a second chamber used for an operation involving digestion of proteins of different species that are present in the sample, to obtain a second sample containing digested peptides and nondigested proteins; and a third chamber connected to the second chamber to receive the second sample containing the digested peptides and the non-digested proteins, the third chamber being used for an operation involving purification and stabilization of the digested peptides.

A device for collecting contaminants from water samples is provided. The device includes a solid sorbent that collects and stores the contaminants from water samples. The solid sorbent is configured to allow for the preservation of the stored contaminants. The concentrations of the contaminants in the water samples are determined via analysis of the solid sorbent or via elution of the stored contaminants from the sorbent and analysis of the eluate solution.

A graphene-based sandwich immunoassay for detecting whether a target biological substance is present in a sample, generally comprising contacting said sample with a plurality of particles coated with graphene nanosheets, each particle having at least one targeting receptor, such that the target biological substance, if present, associates with the targeting receptor, and detecting the presence of the target biological substance in the sample by subsequently contacting the sample with a detection antibody, wherein the detection antibody is capable of targeting and binding with the target biological substance if bound to the targeting receptor to yield a detectable complex. The targeting receptor can be an antibody or fragment thereof. The target biological substance can be an exosome.

The present disclosure relates to a microfluidic immunoassay chip and a microfluidic line immunoassay method. The microfluidic immunoassay chip includes a loading cell, a reaction and detection cell, a washing cell, an enzyme storing cell, a substrate cell, and a termination cell, and a waste liquid cell. A detection membrane strip is disposed in the reaction and detection cell and coated with a capture antigen or a capture antibody.