Abstract: A test-tube for clinical chemistry analysis made up of a plurality of cells, each one of the cells comprising a lower portion for the collection of the reagent and a side intermediate portion provided with an edge for the storage of the sample to be tested upon the mixing thereof with the reagent. The cells are disposed in a straight configuration. The operations of the mixing of the samples with the reagents and the simultaneous stirring inside all cells, may be carried out by imparting the test-tube with an angular motion about a longitudinal axis.

Abstract: The phial or vial holding for a capillary tube is internally subdivided into an external chamber having annular cross-section and an internal chamber having circular cross-section. The outer wall of the chamber of annular cross-section carries a capillary hole and the inner tubular wall separating the two chambers has a hole in alignment with that of the outer wall and of larger diameter. In the hollow space of annular cross-section, a slight entrained flow through the hole of the inner wall and consequently a fast removal of the sample liquid which has passed through the capillary hole takes place. This is without backward flow in the direction of the capillary hole.