A device for receiving a chip shaped carrier having an active surface,
e.g. a surface which carries an array of DNA oligonucleids and which is
adapted to be read by an electro-optical reading device. The device
comprises: a cartridge having an opening for receiving a liquid sample
and including casing parts (14, 15); a casing part having an inner
surface and outer surface, a first cavity for receiving a chip shaped
carrier, and means which provide access to that first cavity and thereby
to the active surface of the chip shaped carrier; a sealing material
which is at least once reversibly liquidifiable; the shape and dimensions
of first cavity, chip shaped carrier, and sealing material, being chosen
that the chip shaped carrier fits into the space delimited by the sealing
material. The process for mounting the carrier in the cartridge
essentially consists in placing the carrier in the first cavity and
liquidifying the sealing material. In the liquid state, the sealing
material closes any gap between the side walls of the first cavity and
the carrier, and after solidification, the sealing material constitutes a
strong and liquid-tight bond.