Filter configured to be assembled in a pathology assembly, said pathology assembly comprising a container assembly and/or a biopsy cassette, wherein the container assembly comprises the filter, a container lid, and a container, and wherein the biopsy cassette comprises the filter a frame comprising a frame closure and a frame lid, the filter comprising a. a first side that is configured to facilitate the outflow of a fixating, conserving and/or nurturing liquid and/or gas; b. the first side being configured to withhold at least one specimen; c. the first side being configured to facilitate recognition and analysis of the specimen; d. a ridge comprising a filter closing element, the filter closing element being configured to be releasably engaged with the container, and wherein the filter closing element is substantially complementary to the frame closure of the frame and the frame comprises a frame closure substantially complementary to the filter closing element, and e. a second side opposing the first side comprising a first member for a first seal to enable an at least liquid tight connection between an assembly comprising the filter and the container lid versus the container, wherein the first side comprises at least one pore configured to enable liquid outflow, wherein a pore clearance is at least 1 μm, preferably at least 10 μm, more preferably at least 500 μm and at most 5 mm, preferably at most 3 mm, more preferably at most 1 mm and most preferably between 10 μm and 1 mm; and the first side comprising ribs to support the specimen and/or to reduce surface tension of the fixating, conserving and/or nurturing liquid. assembly comprising a container assembly and/or a biopsy cassette, wherein the container assembly comprises the filter, a container lid, and a container, and wherein the biopsy cassette comprises the filter a frame comprising a frame closure and a frame lid, the filter comprising a. a first side that is configured to facilitate the outflow of a fixating, conserving and/or nurturing liquid and/or gas; b. the first side being configured to withhold at least one specimen; c. the first side being configured to facilitate recognition and analysis of the specimen; d. a ridge comprising a filter closing element, the filter closing element being configured to be releasably engaged with the container, and wherein the filter closing element is substantially complementary to the frame closure of the frame and the frame comprises a frame closure substantially complementary to the filter closing element, and e. a second side opposing the first side comprising a first member for a first seal to enable an at least liquid tight connection between an assembly comprising the filter and the container lid versus the container, a. a first side that is configured to facilitate the outflow of a fixating, conserving and/or nurturing liquid and/or gas; b. the first side being configured to withhold at least one specimen; c. the first side being configured to facilitate recognition and analysis of the specimen; d. a ridge comprising a filter closing element, the filter closing element being configured to be releasably engaged with the container, and wherein the filter closing element is substantially complementary to the frame closure of the frame and the frame comprises a frame closure substantially complementary to the filter closing element, and element being configured to be releasably engaged with the container, and wherein the filter closing element is substantially complementary to the frame closure of the frame and the frame comprises a frame closure substantially complementary to the filter closing element, and e. a second side opposing the first side comprising a first member for a first seal to enable an at least liquid tight connection between an assembly comprising the filter and the container lid versus the container, wherein the first side comprises at least one pore configured to enable liquid outflow, wherein a pore clearance is at least 1 μm, preferably at least 10 μm, more preferably at least 500 μm and at most 5 mm, preferably at most 3 mm, more preferably at most 1 mm and most preferably between 10 μm and 1 mm; and the first side comprising ribs to support the specimen and/or to reduce surface tension of the fixating, conserving and/or nurturing liquid.