<p>The invention relates to an automatic device to meter reagents onto a multitude of slides comprising holding devices for a multitude of slides which contain each a multitude of separated slots which are adapted to absorb cell or tissue samples; a dosing head unit with a multitude of reservoirs which are adapted to absorb liquid reagents and which have a metering valve at the end/side facing the slots to dose and apply the reagents into the slots; a positioning device to position the reservoirs of the dosing head unit above the respective slots of the slides.</p>
