A device for facilitating the handling of solvents, mixtures and samples on carriers, suitable for cytocentrifugation, containing a holder, an insert, a lid, and at least one tool, wherein: - the holder contains a sample part (Vz) in the shape of substantially a cylinder equipped with a recess for placing of the insert, wherein the lower part of the recess is equipped with at least one opening, and wherein the outer shape of the holder in this part is a cylinder; - the insert is comprised of an outer part and an inner part, wherein the outer part of the insert is equipped with an opening for the inner part of the insert, the opening is connecting the opposite bases of the outer part of the insert, the inner part of the insert is equipped with at least one opening connecting its opposite bases, and wherein the outer shape of the outer part of the insert is adjusted to the size and the shape of the recess of the sample part of the holder, and the outer shape of the inner part of the insert is in at least a part of the inner part of the insert adjusted to the opening in the outer part of the insert and, at the same time, it is in at least a part of the inner part of the insert larger than the narrowest site of the opening in the outer part of the insert; - the lid contains a recess of the shape of substantially a cylinder, wherein the inner shell of the recess of the lid is at least in one part equipped with a thread- the tool is adjusted in shape and size for insertion into the sample part (Vz) of the holder, characterised in that - the outer shell of the sample part (Vz) of the holder is in at least one of its parts equipped with a thread; - the thread on the inner shell of the recess of the lid is compatible with the thread on the outer shell of the sample part (Vz) of the holder, and wherein the part of the lid, which is opposite to the part of the lid containing the recess, is equipped with at least one opening, preferably circular; and wherein the part of the lid around the opening(s) in the lid in the area facing the recess of the lid, is in at least some of its parts larger than the ground plan of the outer part of the insert and/or of the tools placed in the device; - the tool is selected from the group comprising filters, supports, seals, separation parts, sample carriers or combination thereof; - the holder has a drainage circular opening situated in the centre of the bottom of the sample part (Vz) of the holder, the drainage circular opening being suitable for connecting to a vacuum pump. - the holder contains a sample part (Vz) in the shape of substantially a cylinder equipped with a recess for placing of the insert, wherein the lower part of the recess is equipped with at least one opening, and wherein the outer shape of the holder in this part is a cylinder; - the insert is comprised of an outer part and an inner part, wherein the outer part of the insert is equipped with an opening for the inner part of the insert, the opening is connecting the opposite bases of the outer part of the insert, the inner part of the insert is equipped with at least one opening connecting its opposite bases, and wherein the outer shape of the outer part of the insert is adjusted to the size and the shape of the recess of the sample part of the holder, and the outer shape of the inner part of the insert is in at least a part of the inner part of the insert adjusted to the opening in the outer part of the insert and, at the same time, it is in at least a part of the inner part of the insert larger than the narrowest site of the opening in the outer part of the insert; - the lid contains a recess of the shape of substantially a cylinder, wherein the inner shell of the recess of the lid is at least in one part equipped with a thread- the tool is adjusted in shape and size for insertion into the sample part (Vz) of the holder, - the outer shell of the sample part (Vz) of the holder is in at least one of its parts equipped with a thread; - the thread on the inner shell of the recess of the lid is compatible with the thread on the outer shell of the sample part (Vz) of the holder, and wherein the part of the lid, which is opposite to the part of the lid containing the recess, is equipped with at least one opening, preferably circular; and wherein the part of the lid around the opening(s) in the lid in the area facing the recess of the lid, is in at least some of its parts larger than the ground plan of the outer part of the insert and/or of the tools placed in the device; - the tool is selected from the group comprising filters, supports, seals, separation parts, sample carriers or combination thereof; - the holder has a drainage circular opening situated in the centre of the bottom of the sample part (Vz) of the holder, the drainage circular opening being suitable for connecting to a vacuum pump.