Abstract: Subject-matter of the present invention is a method for the preparation of biological, cytological, histological and autopsical samples and a composition for mounting microscope slides. Subject-matter of the invention is also the samples mounted with the compositions described herein.

Abstract: A disposable container (1) for staining or reagent liquid for histological staining machines (100) is described, said staining machines comprising at least one tank (10) delimited on top by an edge (10a) and adapted to contain a staining or reagent liquid. The container (1) comprises a hollow body (1a) defining an inner volume (V) delimited by an end edge (1b), at least one staining or reagent liquid (L) contained in said inner volume (V) and a covering element (2) adapted to seal the inner volume (V). The hollow body (1a) of the container is shaped so as to be insertable inside a tank (10) of a staining machine (100) and the end edge (1b) is shaped substantially complementary to the edge (10a) of the tank (10). A system comprising at least one container according to the present invention and at least one tank for stain or reagent of a staining machine, is also described.