Patent ID: 8753582

Claim:
An apparatus comprising: a sensor array including at least two sensors separated by walls; and a plunger for detecting liquids or substances from liquids in reaction spaces that are spatially separated from one another when the plunger is in contact with the sensor array, the plunger being arranged to be movable relative to the sensor array and including a plunger layer, at a surface lying opposite the sensor array, capable of being brought into mechanical contact with the sensor array, the plunger layer further including at least partly or completely porous properties and being impermeable to liquids or substances from liquids relative to a total layer thickness of the plunger layer, wherein the pores are configured to receive the walls in open pores on a surface of the plunger layer, wherein the at least two sensors are arranged on, in or below a first surface, a second surface being formed by the surface of the plunger layer which lies opposite the sensor array, the plunger is arrangeable in a first position such that the second surface is at a distance from the first surface, and wherein the plunger is arrangeable in a second position such that the second surface and the first surface are in direct contact, and the pores of the porous plunger layer further include a diameter in the range of 0.05 to 200 micrometers, and the open pores have a diameter which is greater than a diameter of the sensors.