Abstract: An apparatus (2) for the automatic testing of substances for carcinogenicity comprises: a plate support (3) on which at least one micro-well plate (1) can be placed; a movable pipetting unit (4) comprising a predetermined number of pipettes (40); a number of containers (5) containing a liquid culture medium (50), the number of containers (5) corresponding to the number of pipettes (40) of the pipetting unit (4); a dish support (6) on which a corresponding number of dishes (60) can be placed, each having a bottom and an upstanding side wall (601); a plurality of spinners (63) for spinning the dishes (60); a plurality of suction cups (62) for placing a lid (600) on each of the dishes; and a plurality of laterally arranged belts (64,65) for transporting the closed dishes (60) to an intermediate storage (8).

Abstract: A hanging droplet plate (1) comprises a predetermined number of droplet compartments (10) each being capable of receiving a droplet of a liquid. The respective droplet compartment (10) comprises a circumferential microfluidic wetting barrier (102) which is arranged to surround a respective cavity (100) and which prevents a droplet from spreading beyond the microfluidic wetting barrier (102). The respective compartment (10) comprises a closed bottom (101) and at least one additional circumferential microfluidic wetting barrier (104), each additional circumferential microfluidic wetting barrier (104) which is arranged to surround a preceding circumferential microfluidic wetting barrier (102). A wettable area (103) is arranged between two adjacently arranged microfluidic wetting barriers (102, 104).

Abstract: A hanging droplet plate (1) comprises a predetermined number of droplet compartments (10) each being capable of receiving a droplet of a liquid. The respective droplet compartment (10) comprises a circumferential microfluidic wetting barrier (102) which is arranged to surround a respective cavity (100) and which prevents a droplet from spreading beyond the microfluidic wetting barrier (102). The respective compartment (10) comprises a closed bottom (101) and at least one additional circumferential microfluidic wetting barrier (104), each additional circumferential microfluidic wetting barrier (104) which is arranged to surround a preceding circumferential microfluidic wetting barrier (102). A wettable area (103) is arranged between two adjacently arranged microfluidic wetting barriers (102, 104).