The present invention relates to a detection method for determining chloride ions content in sea sand, which is performed in the steps as follows: drying sea sand to a constant weight, adding the dried sea sand to boiling deionized water, and fully stirring, standing and filtering the deionized water to obtain washed sea sand and a washed filtrate; then grinding the washed sea sand into powder, adding the powder into deionized water, fully stirring and filtering the deionized water to obtain a powder filtrate; next, taking half of the washed filtrate and half of the powder filtrate, mixing and stirring the two to prepare a mixed filtrate; and measuring the chloride ions content in each of the washed filtrate, the powder filtrate and the mixed filtrate by using a silver nitrate titration method; finally, analyzing and correcting detection results to obtain the chloride ions content in the sea sand. The present invention promotes the release of the chloride ions in the tight-wrapping surface films and fissures of the sea sand to a great extent, providing a scientific guarantee for the authenticity of the detection results on the chloride ions content in the sea sand; and realizes the quick dissolution of the chloride ions, thereby greatly reducing the detection time and significantly increasing the accuracy of the detection results.

A target substance is collected from a composition by using magnetically responsive particles and a magnetic transfer probe. The composition may be prepared, e.g., by introducing magnetically responsive particles to a sample. The particles selectively bind to a target substance of the composition. The target substance and the particles are collected from the sample by using the magnetic transfer probe, which comprises a probe magnet. The probe magnet is a permanent magnet, which comprises a cylindrical portion and a convex bottom portion adjoining the cylindrical portion. The particle collection region of the magnetic transfer probe is at a low position, which allows collecting the particles from a small amount of the prepared composition.

A precipitate and/or an inclusion in a metal material are extracted by electrolysis using an electrolyte solution. The electrolyte solution contains an adsorbent physically adsorbed and/or chemically adsorbed to any metal other than a matrix metal of the metal material. The extracted precipitate and/or inclusion can be quantitatively analyzed with high accuracy.

A device (100) for visualization of one or more components in a blood sample is disclosed. In one aspect, the device (100) includes an imaging module (110), wherein the imaging module (110) includes a controllable illumination source (102) capable of emitting light in plurality of discrete angles; a tube lens (105); one or more objective lens (104); and an image capturing module (106). Additionally, the device (100) includes a channel (103) configured to carry the blood sample, wherein the channel (103) is capable of sorting the one or more components in the blood sample.

A sensor apparatus for detecting a heavy metal in a sample.

A biological material measuring instrument is described. The biological material measuring instrument includes a rotating body and a main body. The rotating body includes one or more cartridge holders having cuvettes in which a reagent and an analyte in a sample react. The main body includes a pair of light-emitting parts and light-receiving parts to optically measure the analyte in the sample. The rotating body further includes a light-emitting optical waveguide for guiding the light of the light-emitting parts to the cuvette and a light-receiving optical waveguide for guiding.

Provided are systems and methods of sample preparation and analyte detection.

A gas sensor includes a support structure with a cavity, a sensing element sensitive to a gas and arranged in the cavity, and a filter spanning the cavity. The filter is a size selective filter.

A method for separating cells in a biofluid includes pretreating the biofluid by introducing a predetermined amount of a cocktail of antibodies, flowing the pretreated biofluid through a microfluidic separation channel, and applying acoustic energy to the pretreated biofluid within the microfluidic separation channel. A system for microfluidic cell separation, capable of separating target cells from non-target cells in a biofluid includes at least one microfluidic separation channel, a source of biofluid, a source of an additive including the cocktail of antibodies, and at least one acoustic transducer coupled to the microfluidic separation channel. A kit for microfluidic cell separation is also disclosed. A method of facilitating separation of cells is also disclosed.

A method and system for processing an adipose tissue material sample to create and collect fat aspirate particles having particle diameters less than or equal to a selected size are disclosed. A filter screen assembly having an interface part, a closed end opposite to the interface part, and a screen portion therebetween is inserted through a first port in a lid of a container, with the interface part providing access to an interior of the container for insertion of a transfer cannula connected to a syringe filled with the adipose tissue material. The screen portion includes a plurality of apertures having diameters of the selected size. Adipose tissue material is expelled from the transfer cannula through the apertures of the filter screen assembly into the container to create and collect the fat aspirate particles having particle diameters less than or equal to the selected size.