摘要:
A handheld and portalbe extraction device (10) is directed to a microfluidic-based system to be used in the field to extract and purify an analyte, preferably a nucleic acid, from a fluid-based sample. Preferably, the fluid-based sample is water-based. The fluid-based sample can also be a biological fluid sample. The handheld and portable extraction device includes a syringe-like device (14) coupled to a purification chip (48). The purification chip is preferably included within a chip block (40), which is removable from the remaining portion of the handheld and portable extraction device. The analyte collected within the purification chip can be later removed and collected for analysis.
摘要:
A body fluid collecting, transporting, and dispensing system includes a body fluid collecting receptacle and a handle for supporting the receptacle in a fluid collection position. The handle includes a fluid sample chamber in fluid communication with the receptacle to receive a sample of the body fluid and the handle is further removable from the receptacle for transport and dispensing of the body fluid sample.
摘要:
A sampling apparatus (100) includes an ampoule barrel (101) for receiving an ampoule (102) through a first opening, the ampoule barrel (101) comprising a second opening (301) adapted to flow a liquid into the ampoule barrel (101) and a structure (304) adapted break a frangible tip (104) of the ampoule (102).
摘要:
The invention features methods and devices for the delivery of a fluid medium containing analytes, e.g., particles, solutes, or solvents, to an analytical device. The systems are designed to minimize contact with potentially hazardous, fragile, or valuable samples. The systems allow for the dilution, mixing, and introduction of the fluid medium to an analytical device, followed by possible further analysis or sample manipulation.
摘要:
The present invention is directed to devices and methods for collecting liquid samples and of testing the sample for the presence of an analyte of interest and/or a physical property. In one embodiment the device is a urine cup having an interior for containing a liquid sample, a lid, and a chamber for holding liquid. The device contains a test component for determining the presence of an analyte in the liquid sample and/or a physical property. A tube is immersed in liquid sample when the device is filled with liquid sample to be tested. When the lid is applied to the device (e.g., by screwing or snapping on), liquid sample is forced through the tube and into the chamber holding the test component.
摘要:
The present invention provides a downhole sample tank and a plurality of micro sample chambers. The micro sample chambers can have at least one window for introduction of visible, near-infrared (NIR), mid-infrared (MIR) and other electromagnetic energy into the tank for samples collected in the micro sample chamber downhole from an earth boring or well bore. The window is made of sapphire or another material capable of allowing electromagnetic energy to pass through the window. The entire micro sample chamber can be made of sapphire or another material capable of allowing electromagnetic energy to pass another material enabling visual inspection or analysis of the sample inside the micro sample chamber. The micro sample chamber enables immediate testing of the sample on location at the surface to determine the quality of the sample in the main sample tank or to enable comprehensive testing of the sample.
摘要:
The design of the device allows automatic and programmed liquid medium sampling during a technological process. A sample obtained by periodical withdrawing is highly representative and used in laboratory analysis ofi product quality control. The device consists of a housing accommodating the pistons (3) and (4) the movement of which works on the pin (9) to close the opening of the seat (11) and let the medium from the chamber (14) flow out into the vessel (12). The spring (8) returns the pistons (3) and (4) into the upper position and the chamber (14) is filled with the medium. The spring (10) works on the pin (9) to close the opening of the seat (11). During the sampling, the withdrawn medium is stored in the vessel (12) which is detachable, sealed tight and safiely carried away to the laboratory. Since the devices of this type are mostly used in oil and petrochemical industry, they are explosion-proof. The invention can also be used for dosing liquid mediums into the technological process.
摘要:
A system for collecting soil solution samples including a sampling device arranged to contact soil and coupled to a vacuum source, and a suction unit for automatically controlling pressure and time of operation of the vacuum source to provide suction for withdrawing solution from the soil through the sampling device and abrupt release of the vacuum at the end of a pre-defined sampling period, and a method for collecting soil solution samples including coupling a sampling device to a vacuum source, planting the sampling device in soil to be monitored, automatically controlling pressure and time of operation of the vacuum source to provide suction for withdrawing solution from the soil through said sampling device, and automatically stopping the vacuum source and abruptly releasing the vacuum at the end of a pre-defined sampling period.
摘要:
The invention relates to a device and a method for extracting liquid samples from containers (1) and/or tubes filled with a medium (2), especially from fermenters, via a filter membrane (5) by means of a partial vacuum. Said filter membrane (5) arranged inside a sample probe (3) consists of a material acting as a sterile boundary, a supply line (6) which can be used to guide gas and a discharge line (7) which can be used to guide the sample being arranged on the sterile boundary side (5a) of the filter membrane (5).
摘要:
An injection needle particularly intended for transferring a representative fluid sample into a sample bottle (1) which is closed by a membrane (2) made from a rubber elastic material. The needle comprises a tubular inner wall (6) having a needle point (8), and a tubular outer wall (10) concentrically surrounding and radially spaced from the inner wall (6) at least along a portion thereof distant from the needle point (8) and, at its end facing the needle point, having a conically tapering portion (12) sealingly engaging the inner wall (6). The outer wall (10) is provided with at least two apertures (14, 16) spaced longitudinally of the needle. When using the injection needle for the above purpose, fluid is injected into the sample bottle (1) from a fluid source of interest, by inserting the injection needle into the sample bottle through the membrane to a level at which the penetrated portion of the membrane (2) sealingly engages the outer wall (10) of the needle between the spaced apertures (14, 16) in the outer wall, such that initially some of the fluid that is injected into the bottle is allowed to flow into the annulus between the inner and outer walls of the needle (4), through the aperture (14) of the outer wall at the inside of the membrane, and hence out through the aperture (16) of the outer wall at the outside of the membrane.