摘要:
The invention relates to the production and the design of flow-through elements for microstructured analytical systems. The inventive method allows the production of analytical systems from synthetic material that are provided with a liquid- and gas-tight channel structure in which thin-film electrodes may be arranged any place.
摘要:
Die Erfindung betrifft eine Vorrichtung (1) zur Behandlung von Biomolekülen, insbesondere zur Isolierung von Nucleinsäuren, mit einer Trennsäule (2), die einen obenseitigen Einlaß und einen untenseitigen Auslaß (7) aufweist und in der eine Trenneinrichtung (8) angeordnet ist, und mit einem Auffanggefäß (11) zum Auffangen der aus dem Auslaß (7) austretenden Flüssigkeit. Sie ist dadurch gekennzeichnet, daß das Verhältnis von Innenvolumen der Trennsäule (2) oberhalb der Trenneinrichtung (8) zur Oberfläche der Trenneinrichtung (8) mindestens 10 ml/cm 2 beträgt und daß ein Außengefäß (12) vorhanden ist, in das die Trennsäule (2) und das damit verbundene Auffanggefäß (11) einsteckbar sind.
摘要:
The present invention concerns a one-way reaction vessel, open at both ends, for solid phase immunological analysis, with at least one immunologically reactive constituent applied onto a substrate with an active or activated surface. Said reactive constituent has a load density such that the constituent to be determined binds quantitatively (bonding equilibrium) to the reactive constituent before the flowing liquid leaves the substrate; the volume of the substrate bed is up to 600 νl, and the flow speed of the liquid from the substrate bed is determined accordingly. The one-way reaction vessel can be used to measure constituents which can be determined on the basis of immune reactions.
摘要:
There is described an apparatus and method which permits accurate weighing and/or measuring of solid particulate matter. The invention may be utilised to enable a hollow structure (1) such as a container (for example a tube) to be at least partially filled with a pre-determined volume or weight of solid particulate matter, such as powder, in an accurate and reproducible manner. In particular there is described a method of measuring out a specific volume and/or weight of particles. The method comprises the up-take of a pre-determined amount of particles into a transfer vehicle (4), movement of the particles into the tranfer vehicle (4) being controlled by pressure (5, 6); and the volume of the transfer vehicle (4) dictating the amount of particles taken up. In this manner a specific volume of particles may be accurately taken up into the transfer vehicle (4) and the volume may be calculated to give a certain weight of particles, depending on the density of the particles in question. The particles taken up in the transfer vehicle (4) may be expelled therefrom, when required, by alteration of the pressure (5, 6).
摘要:
A capillary flow cell in which a capillary (9) partially extends along the optical path of the cell and has its two end portions (12,13) bent to achieve an essentially Z-shaped configuration. A template (1) has a central bore (2) in which the middle part (11) of the capillary (9) is positioned. A method of manufacture of this capillary flow cell comprises the steps of a) inserting a capillary in a central bore of a template, b) heating the capillary immediately outside the bore to soften the capillary material c) bending the two ends to achieve an essentially Z-shaped or U-shaped configuration. i
摘要:
The isotopes of zirconium can be partially or completely separated by loading an essentially anhydrous alcoholic solution of an ionic compound of zirconium onto a cationic exchange resin with pentavalent phosphorus derived active groups which serves as the stationary phase of a chromatograph, eluting the compound with an essentially anhydrous alcoholic solution of hydrogen chloride and collecting distinct elution volumes representative of each isotope. In a preferred embodiment, the active groups of the cation exchange resin are derived from di-2-ethylhexyl phosphoric acid, tri-n-octyl phosphine oxide or tributyl phosphate and the chromatograph is of a type, such as a continuous annular chromatograph that it can be operated in a continuous, steady state manner.
摘要:
A capillary flow cell in which a capillary (9) partially extends along the optical path of the cell and has its two end portions (12,13) bent to achieve an essentially Z-shaped configuration. A template (1) has a central bore (2) in which the middle part (11) of the capillary (9) is positioned. A method of manufacture of this capillary flow cell comprises the steps of a) inserting a capillary in a central bore of a template, b) heating the capillary immediately outside the bore to soften the capillary material c) bending the two ends to achieve an essentially Z-shaped or U-shaped configuration.
摘要:
Die Erfindung betrifft eine chromatographische Säule zum Separieren der Antigen-Antikörper-Komplexe von den freien Antigenen, wobei in einer wasserfesten und wasserdichten Umhüllung als unpolares Säulenmaterial ein kreppförmiges dicht gerolltes Filterpapier mit hohem Reinheitsgrad, insbesondere aus Regeneratzellulose, eingepreßt ist. Erfindungsgemäß weist die chromatographische stehende Säule einen oberen von oben beaufschlagbaren Reaktionsteil 13 und einen unteren Trenn- und Meßteil 10; 32 auf, die durch einen perforierbaren Boden 16; 22 voneinander getrennt sind.