Abstract: The invention is a container for analyzing liquid, in particular a cuvette for analyzing urine, said container comprising an upper part (10) having a transparent upper window part, a lower part (20) adjoining the upper part (10), said lower part (20) having a transparent lower window part, an analyzing space located between the upper window part and the lower window part, an inlet aperture (12) for charging the liquid into the analyzing space, and an outlet aperture (13) for allowing air escape from the container during charging. The container is characterized by comprising a buffer passage (28) between the analyzing space (29) and the outlet aperture (13).