Patent ID: 8337781

Claim:
A tissue infiltration device for samples contained in cassettes, the tissue infiltration device comprising: at least two liquid containers ( 7 , 11 a - 11 d , 13 , 15 ) for containing a respective liquid ( 12 , 14 , 16 ), a plurality of transport devices ( 4 ), each transport device ( 4 ) operable to hold a plurality of cassettes ( 5 ), a transport apparatus ( 6 ) by which the transport device ( 4 ) can be brought to a liquid container ( 7 , 11 a - 11 d , 13 , 15 ) and moved away from a liquid container ( 7 , ll a - 11 d , 13 , 15 ), and a control device ( 10 ) configured to control the transport apparatus ( 6 ) to perform a predetermined sequence of operations ( 8 ) in which a transport device ( 4 ) runs through the liquid containers ( 7 , 11 a - 11 d , 13 , 15 ) of the tissue infiltration device ( 1 ) wherein the control device is configured to bring at least two transport devices ( 4 ) above or next to one another in at least one of the liquid containers ( 7 , 11 a - 11 d , 13 , 15 ), such that the at least two transport devices have different dwell times in such liquid container ( 7 , 11 a - 11 d , 13 , 15 ).