Abstract: A sparging device, especially for use in a bioprocess, including a medium chamber and at least one gas chamber. The gas chamber at least partially surrounds the medium chamber, or the medium chamber at least partially surrounds the gas chamber. The medium chamber and the gas chamber are separated from each other by a wall. The wall has a plurality of through-holes or is composed of a porous material, such as a membrane or a porous ceramic. The sparging device further includes at least one gas inlet port opening into the gas chamber for inflow of gas.

Abstract: A monolithic weighing system (100) includes a plurality of levers (120), which are joined together by thin-section joints (110). The levers, on the one hand, and the thin-section joints, on the other hand, are made of different materials or material combinations; and the levers, adjoining one of the thin-section joints on both sides thereof, have a first material (21), and the thin-section joint has a second material (22) which is different from the first material. An associated method includes (i) an additive manufacturing process, in which different materials, including the first and second material (21, 22), are applied in layers and are joined to form a single-piece weighing system blank (10), wherein the weighing system blank (10) has prospective lever regions (12) and prospective thin-section joint regions (11), and (ii) subsequent subtractive finishing of the weighing system blank at least on the prospective thin-section joint regions to obtain the weighing system.

Abstract: A pot magnet (20) for a moving coil (10) of an electronic balance operating using the electromagnetic compensation principle includes: —a pot base (24) and a pot wall (22) rising vertically from the pot base, and —a permanent magnet structure (26) disposed within the pot wall and having an annular gap thereto, which structure has a permanent magnet body (261) arranged on the pot base side and a pole plate (262) connected to the surface thereof facing away from the pot base side. The pole plate is fixed by a rigid mechanical connection independent of the permanent magnet body to the pot base at a predetermined distance therefrom and the permanent magnet body is bonded to the pole plate on a surface facing the pot base without contacting the pot base.

Abstract: A distributor head for a suction pump which includes a housing (12), a pump port (16) configured to apply a negative pressure, and a plurality of hollow needles (18). The hollow needles are fixed to the housing (12), are connected in a liquid-tight manner to the pump port (16), and are arranged parallel to and at a distance from one another. Individual connecting paths (34) of the hollow needles (18) to the pump port (16) include respective, independently operable control valves (36).

Abstract: A pot magnet (20) for a moving coil (10) of an electronic balance operating using the electromagnetic compensation principle includes: a pot base (24) and a pot wall (22) rising vertically from the pot base, and a permanent magnet structure (26) disposed within the pot wall and having an annular gap thereto, which structure has a permanent magnet body (261) arranged on the pot base side and a pole plate (262) connected to the surface thereof facing away from the pot base side. The pole plate is fixed by a rigid mechanical connection independent of the permanent magnet body to the pot base at a predetermined distance therefrom and the permanent magnet body is bonded to the pole plate on a surface facing the pot base without contacting the pot base.

Abstract: A distributor head for a suction pump which includes a housing (12), a pump port (16) configured to apply a negative pressure, and a plurality of hollow needles (18). The hollow needles are fixed to the housing (12), are connected in a liquid-tight manner to the pump port (16), and are arranged parallel to and at a distance from one another. Individual connecting paths (34) of the hollow needles (18) to the pump port (16) include respective, independently operable control valves (36).