Abstract: The present invention provides a method for fixing and/or stabilizing a sample, in which the sample is put into a permeable container with a maximum overall height of 10 mm, preferably of 5 mm, and the container filled with the sample is immersed in fixing and/or stabilizing agents and the sample is fixed and/or stabilized.

Abstract: The present invention relates to a method of stabilizing a biological sample, having the steps of preparation of a biological sample, and of contacting the biological sample with a composition, having a substance according to the following structural formula: in which R1 is a hydrogen residue or a methyl residue, R2 and R3 are identical or different hydrocarbon residues with a length of the carbon chain of 1-20, and R4 is an oxygen, sulfur or selenium residue (FIG. 1).

Abstract: The present invention provides a method for fixing and/or stabilizing a sample, in which the sample is put into a permeable container, the permeable container having an opening, which is pressed into the sample, then a portion of the sample brought into the permeable container in this way is separated from the rest of the sample, and the container filled with the sample in this way is immersed in fixing and/or stabilizing agents and the sample is fixed and/or stabilized.

Abstract: The present invention relates to new compositions for isolating and/or stabilizing nucleic acids in materials of biological origin. The compositions comprise as an essential ingredient a cationic compound of general formula Y+R1R2R3R4X? wherein Y may represent nitrogen or phosphorus R1, R2, R3 and R4 independently of one another may represent a branched or unbranched C1-C20-alkyl group and/or a C6-C20-aryl group as well as a C6-C26-aralkyl group and X? may represent an anion of an inorganic or organic, mono- or polybasic acid.

Abstract: The present invention relates to a container for receiving a liquid biological sample, with a volume for receiving the liquid biological sample, and with a filling and/or removal opening for filling the volume with the sample and for removing the sample from the volume. The invention is distinguished in that a constriction or partition forming an aperture is arranged in the volume in order to partition off a predefined measured volume from the volume.

Abstract: The invention relates to a method for treating a biological sample, comprising the following method steps: i) preparation of a biological sample and ii) bringing the biological sample into contact with a composition, comprising: (1) 1 to 100 wt. % of at least one polyol and (2) 0 to 99 wt. % of at least one additive, wherein the total amount of components (1) and (2) is 100 wt. %. The invention further relates to biological samples obtained by said method, a method for analysis of a treated biological sample, devices for treating a biological sample, use of said devices, various kits and use of a composition.

Abstract: The present invention relates to new compositions for isolating and/or stabilising nucleic acids in materials of biological origin. The compositions comprise as an essential ingredient a cationic compound of general formula Y+R1R2R3R4X? wherein Y may represent nitrogen or phosphorus R1, R2, R3 and R4 independently of one another may represent a branched or unbranched C1-C20-alkyl group and/or a C6-C20-aryl group as well as a C6-C26-aralkyl group and X? may represent an anion of an inorganic or organic, mono- or polybasic acid.