This disclosure is directed to an apparatus, system and method for retrieving a target material from a suspension. A system includes a plurality of processing vessels and a collector. The collector funnels portions of the target material from the suspension through a cannula and into the processing vessels. Sequential density fractionation is the division of a sample into fractions or of a fraction of a sample into sub-fractions by a step-wise or sequential process, such that each step or sequence results in the collection or separation of a different fraction or sub-fraction from the preceding and successive steps or sequences. In other words, sequential density fractionation provides individual sub-populations of a population or individual sub-sub-populations of a sub-population of a population through a series of steps.

Methods of treating an inert surface of a substrate to improve the adherence to the treated surface of micro-dimensioned particles including the steps of: contacting the inert surface with in an aqueous dispersion of a construct of the structure F-S-L; and then washing the surface with an aqueous vehicle to provide the treated surface, where F is a polyamine; S is —CO(CH.sub.2).sub.2CO—, —CO(CH.sub.2).sub.3CO—, —CO(CH.sub.2).sub.4CO— or —CO(CH.sub.2).sub.5CO—; and L is a diacyl- or dialkyl-glycerophospholipid.

Methods and devices for transferring materials between containers are discussed. One such connector includes: a base; a first elongate structure having first and second ends, the first elongate structure extending from a first side of the base at the first end to the second end distal the base, the second end forming a first opening sized and configured to receive a first container; a duct extending through the base and having a first tip skirted on one or more sides by the first elongate structure; a first guard positioned within the first elongate structure, wherein the first guard comprises a first surface, and the first surface is located further away from the base than the first tip. When the first container is moved into the first opening, the first surface moves toward the base, and the first tip enters the first container, creating a fluid path for the first container.

An adapter for connecting an array of pipette tips having through bores with conical upper ends to a multichannel air displacement pipettor having a plurality of ports with compliant internal sealing surfaces. The adapter comprises a planar base with an array of openings extending between its top and bottom surfaces. Sealing tubes project upwardly from the top surface, and tip mounting tubes project downwardly from the bottom surface, with pairs of sealing tubes and tip mounting tubes being arranged coaxially and in communication with respective ones of the openings in the base. The tip mounting tubes are externally dimensioned and configured for insertion into the conical upper ends of the pipette tips, and the sealing tubes are externally configured and dimensioned for insertion into the ports of the pipettor and into sealing interengagement with their compliant internal sealing surfaces.

A method of producing an implant for fecal transplant (FT), including: introducing fecal materials into a container, and processing the fecal materials to a smaller size in the container. According to some embodiments, the container is in ambient conditions, and the processing in the container includes non-ambient conditions. Optionally, the non-ambient conditions include an atmosphere having at most 18% of O.sub.2. Optionally, the method includes adding a liquid into the container, the liquid including a preservative material. Optionally, the liquid includes between 10% to 30% glycerol by volume. Optionally, the method includes sealing the container with a sealing lid after the introducing, and processing the fecal materials in the sealed container. Optionally, the processing of the fecal materials includes cutting the fecal materials by a cutting element to increase an exposed surface area of the fecal materials.

A microfilter, a manufacturing method thereof, and a microfiltration unit for holding the microfilter are provided. The microfilter has: a non-epoxy based microfilm; and a plurality of microholes provided on the surface of the non-epoxy based microfilm and penetrating therethrough via UV laser ablation, wherein the surface of the non-epoxy based microfilm is patterned into predetermined sections for locating isolated targets and quick enumeration.

The invention discloses a method for purifying and concentrating DNA in a forensic sample by using a selective filtration column, including the steps of: adding cytosol after digestion and lysis into an inner tube of a selective filtration column, and centrifuging the selective filtration column in a centrifuge; adding 5-100 microliters of water into the selective filtration column, shaking for 30 seconds, and transferring an aqueous solution in the selective filtration column into a clean centrifuge tube, in which case a solution in the centrifuge tube is a purified and concentrated. According to the method, a lysis solution is used for lysing and digesting residual human cells in the sample, after this, the DNA is completely free in the solution, solid particles in the sample are centrifugally removed through the centrifuge tube, and then the solid particles pass through an ultrafiltration membrane at the bottom of the selective filtration column, under the condition of high-speed centrifugation, the ultrafiltration membrane is only permeable to small molecular substances and impermeable to bio-macromolecular substances, such as DNA, so that the purification and concentration of the macromolecular substance, i.e., DNA, can be realized.

Kits, systems and methods for extracting nucleic acid, for example DNA or RNA, from a sample. The kits, systems and methods having a first syringe containing a lysis and preservative reagent, at least one second syringe containing an alcohol reagent, a third syringe containing a quantity of nucleic acid-soluble, nuclease-free water, a collection tube; and a filtering device.

The present disclosure provides a liquid sample processing method capable of efficiently removing blood cells. The liquid sample processing method is configured to remove blood cells out of a liquid sample containing blood cells, and includes filtering the liquid sample by allowing measurement objects to pass through the filter faster than the blood cells, and filtering the liquid sample after the measurement objects are made to pass through the filter faster than the blood cells so as to remove the blood cells.

An adapter for laboratory cell strainer is disclosed. The adapter includes a unitary structure having an annular top surface, an annular bottom surface, a smooth inner surface, an outer surface, and an opening extending therethrough. The adapter has a downwardly and radially inwardly sloped funnel section terminating in a cylindrical edge at the annular bottom surface with a lower section of the funnel section having a narrowed, tapered diameter. The outer surface of a middle section of the funnel section has an annular neck configured therearound with a plurality of radially protruding ribs. The unitary structure is configured for connection to the laboratory cell strainer at the annular top surface and placement inside a various sized laboratory tube for receiving filtered liquid during use.