Abstract: The device has a housing (5) which can be fastened on the sanitary article (2) and in which is mounted a pushbutton (7) for actuating the drainage valve (A). A pulling element (16) connects the pushbutton (7) to a closure body (33) which is mounted in a displaceable manner in a housing (22) of the drainage valve (A). A changeover device (26) is mounted on the housing (22) of the drainage valve (A) and can be changed over under tension in each case for opening and closing the drainage valve (A). By virtue of the changeover device (26) being arranged on the housing (22) of the drainage valve (A), the actuating part which contains the pushbutton (7) can be designed in a more space-saving and compact manner.

Abstract: The faucet has a fitting body, which has a base (2) that is securable to a wash-stand or a building wall and a housing (3) that is detachably mounted on said base. The housing (3) has a housing (3) that has an outlet member (4) and a water outlet opening (5). An electrically operated valve (6) and a presence detector (7) are mounted on the base (2). The presence detector (7) is mounted in a receiving space (18) of the housing (3) on a holder (8) that has electric contacts (30, 31). The holder (8) is positioned so as to be mechanically and electrically detachable on a contact carrier (58) that is secured to the base (2) and has electric contacts (34, 35).

Abstract: The invention relates to an elongate support (1) in which a plurality of pipettes (5) are mounted so that they can be longitudinally displaced and lifted and lowered. The pipette tip (26) is configured to be electroconductive so that, when it is dipped into a liquid, the capacity between the tip and the parts electrically connected to it and other, grounded parts changes and is registered to detect the liquid. To this end, the pipette tip (26) is linked with a circuit (34) in a support (1) via a flexible cable (33). In order to prevent the cable (33) from being caught by movable parts, it is guided, just like the connecting tube (25) of the pipette (5), in a channel of a pipette housing configured as a hollow profile (12) up to the top end thereof and preferably through the interior of a stiffer jacket tube (38) that is configured as a support element and to a C profile (3) of the support (1).

Abstract: A workstation has a feed device (1) for sample tube racks (7), comprising a balance (17) in which the weight of individual sample tubes (6) is determined by a procedure in which the sample tube holder (7) is weighed in each case before and after removal of each sample tube (6) and the difference between the weights is determined. Removal is effected in each case by means of a gripper (23) of a transfer device (3) which then distributes the sample tubes (6) over sample tube buckets (22) in such a way that said buckets form pairs having approximately the same weights. With the aid of a receiving device (27) which is gripped by the gripper (23) and removed from a holder, the sample tube buckets (22) are picked up and introduced into a centrifuge (2). They are removed again after centrifuging and, after the receiving device (27) has been deposited in the holder, the individual sample tubes (6) are removed from the sample tube buckets (22) by the gripper and deposited on carriers (5) of a conveying device (4).