Abstract: A device is provided for determining total chlorine in liquids, the device including an indicator carrier that is impregnated with a color indicator that contains Michler's thioketone, the indicator carrier additionally containing as a color indicator at least one azine as well as an iodide, in particular potassium iodide and/or sodium iodide.

Abstract: The invention relates to a method for recovering at least short RNA, having at least the following steps: a) making available a biological solution containing at least short RNA as well as proteins and/or long nucleic acids (long RNA and DNA); b) removing the proteins and the long nucleic acids from the solution, at least the proteins being precipitated; c) adsorbing the short RNA onto a solid (first) carrier after precipitation of the proteins; d) recovering the short RNA by desorption from the carrier. The invention further includes a kit for carrying out the method.

Abstract: The present invention relates to an apparatus for determining total chlorine in liquids, the apparatus comprising an indicator carrier that is impregnated with a color indicator that contains Michler's thioketone, the indicator carrier additionally containing as a color indicator at least one azine as well as an iodide, in particular potassium iodide and/or sodium iodide.

Abstract: The invention concerns a separation matrix for purifying His-tag proteins by the introduction of alkyl substituents into a TED molecule, if applicable by the use of support materials having an average pore width >10−7 m (1000 Å).

Abstract: The invention concerns a separation device (1) for processing biomolecules, especially for isolating nucleic acids, with a separation column (2) that has a top side inlet (7) and a bottom side outlet (8) and in which a separation material (10) is arranged, as well as with a collection vessel (3) for collecting the liquid exiting from the outlet (8), wherein the separation column (2) is inserted into the collection vessel (3) and is closed off with a removable cover (4), wherein the interiors of the collection vessel (3) and the separation column (2) have a pressure-equalizing connection (11, 12) in addition to the outlet (8) from the separation column (2).

Abstract: The present invention relates to a method for the analysis of a gaseous component or of a component that can be transformed into gaseous form (23) of a sample (5) which provides that the sample (5) is filled into a sample receptacle (2) through a receptacle opening (4), and an analysis receptacle (7), which was previously supplied with a tracer reagent, is then by way of its receptacle opening (4) connected with the receptacle opening (4) of sample receptacle (2) via an adapter (10), after which step the component (23) is expelled from the sample receptacle (2) and into the analysis receptacle (7) wherein the analysis receptacle (7) is connected with the outside atmosphere in such a manner that a pressure compensation can take place. The invention further relates to a test kit, in particular, a test kit for implementing the method.

Abstract: Apparatus for eliminating halide ions such as chloride ions from aqueous solutions having a hollow cylindrical sample holding chamber (2), the front end of which has an orifice (3) and in the vicinity of which is disposed a filter plate (4) that extends over the cross section of the sample holding chamber (2) and is liquid-permeable and essentially impermeable for solids and is inserted in a fixed manner into the hollow cylinder; a plunger (6) which can move to and fro in the sample holding chamber (2) and has a plunger stem (7) attached thereto engages in the open rear end (5) of the sample holding chamber, and, in the sample holding chamber (2) between the filter plate (4) and the plunger (6) is disposed a freely movable bed (7) of an adsorbent reacting with halide ions and forming a sparingly soluble compound, which bed fills a part of the sample holding chamber (2). The adsorbent is preferably charged with silver nitrate as compound reactive with halide ions.

Abstract: The moisture indicator has a support that is equipped with a substance which contains a moisture-indicating medium that reversibly changes color as a function of moisture. According to the present invention, the moisture-indicating medium is a pH indicator dye that is combined with a zinc salt.

Abstract: Apparatus for eliminating halide ions such as chloride ions from aqueous solutions having a hollow cylindrical sample holding chamber (2), the front end of which has an orifice (3) and in the vicinity of which is disposed a filter plate (4) that extends over the cross section of the sample holding chamber (2) and is liquid-permeable and essentially impermeable for solids and is inserted in a fixed manner into the hollow cylinder; a plunger (6) which can move to and fro in the sample holding chamber (2) and has a plunger stem (7) attached thereto engages in the open rear end (5) of the sample holding chamber, and, in the sample holding chamber (2) between the filter plate (4) and the plunger (6) is disposed a freely movable bed (7) of an adsorbent reacting with halide ions and forming a sparingly soluble compound, which bed fills a part of the sample holding chamber (2). The adsorbent is preferably charged with silver nitrate as compound reactive with halide ions.

Abstract: The present invention relates to a method for the analysis of a gaseous component or of a component that can be transformed into gaseous form (23) of a sample (5) which provides that the sample (5) is filled into a sample receptacle (2) through a receptacle opening (4), and an analysis receptacle (7), which was previously supplied with a tracer reagent, is then by way of its receptacle opening (4) connected with the receptacle opening (4) of sample receptacle (2) via an adapter (10), after which step the component (23) is expelled from the sample receptacle (2) and into the analysis receptacle (7) wherein the analysis receptacle (7) is connected with the outside atmosphere in such a manner that a pressure compensation can take place.

Abstract: This invention relates to a chromatographic column with a separation column which is equipped on at least one side with an end threading mechanism for connecting a capillary, a precolumn, or another separation column, whereby the end threading mechanism has a support nut surrounding the column tube and a coupling nut, and the support nut is supported towards the corresponding end of the separation column at a stop part which is held in a recess at the separation column wherein the column has several axially consecutive recesses.