Abstract: An instrument (1) for powderous or pasteous substances has a control unit (40) and a dispensing unit (50). The control unit is configured as a grip handle to be handheld. The dispensing unit is designed for removable seating in the holder device. A vertically movable shutter bolt (52) can open a discharge orifice (58). The control unit (40) has an actuator (20) directed at the shutter bolt, with a motor (21), a transmission (22), an actuator element (30) and a drive shaft (12), oriented vertically when operated. The drive shaft (12) can be engaged with the shutter bolt. Continuing and increased actuation of the actuator element moves the shutter bolt into an opening range where the shutter bolt opens up the discharge orifice to a variable, position-dependent extent, allowing the material to flow into a target vessel.

Abstract: An instrument (1) for powderous or pasteous substances has a control unit (40) and a dispensing unit (50). The control unit is configured as a grip handle to be handheld. The dispensing unit is designed for removable seating in the holder device. A vertically movable shutter bolt (52) can open a discharge orifice (58). The control unit (40) has an actuator (20) directed at the shutter bolt, with a motor (21), a transmission (22), an actuator element (30) and a drive shaft (12), oriented vertically when operated. The drive shaft (12) can be engaged with the shutter bolt. Continuing and increased actuation of the actuator element moves the shutter bolt into an opening range where the shutter bolt opens up the discharge orifice to a variable, position-dependent extent, allowing the material to flow into a target vessel.

Abstract: A method for the preparation of samples by means of a dosage-dispensing device, a weighing system with a load receiver, a processor unit, a memory unit, and an exchangeable dosage-dispensing unit. A target container is set on the load receiver. The dosage-dispensing unit and/or the target container includes electrically insulating material. The dosage-dispensing unit has the capability to change positions relative to the load receiver. While the dosage-dispensing unit is in a first position and a target container is on the load receiver, a starting weight value is determined, the dosage-dispensing unit is brought into a second position, a dosage-dispensing cycle delivers a dosage material in a predefined amount from the dosage-dispensing unit into the target container by means of the processor unit, the dosage-dispensing unit is brought into the first position, and while the dosage-dispensing unit is at rest in the first position, an ending weight value is determined.

Abstract: An apparatus and a method detect the presence of solid particles in a liquid phase, where an at least partially transparent container encloses the solid particles and the liquid phase. The apparatus includes a camera to make digitized images in the form of arrays of pixels with their associated pixel values. The apparatus also includes an agitator device to hold the container and to impart movements to the container, transmitting kinetic energy to the mixture. The camera is aimed at a transparent portion of the container to take images of the mixture in motion. A processor unit, in electronic communication with the camera, receives and processes the digitized images of the mixture in motion, resulting in the generation of an analytical representation of the solid particles in the liquid. In this manner, the state of dissolution of the solid particles may be determined.

Abstract: In the method of optimizing the dosage-dispensing process of a dosage-dispensing device, an examination takes place prior to a first dosage delivery, whether at least one flow parameter relating to the dosage-dispensing process is stored in the memory module of the dosage-dispensing unit. If a stored flow parameter is found to be present, said flow parameter is called up from the memory module. If no store flow parameter is present, a flow parameter is requested by the user by entering a request, a flow parameter is called up from a central database, or at least one flow parameter is determined by means of the first run of the dosage-dispensing process based on a default setting of the dosage-dispensing program. With the at least one flow parameter, the dosage-dispensing program is directly adapted, at least one run of the dosage-dispensing process is performed with the adapted dosage-dispensing program, and/or the at least one flow parameter is stored in the memory module.

Abstract: A work cabinet with a work chamber that contains, on a temporary basis, a material being worked upon has a transfer opening connecting the work chamber with an ambient space of the cabinet. The transfer opening permits access to the worked material and gives access to the work chamber. A connected ventilating device provides a lower-than-ambient pressure in the work chamber. The work cabinet further has a printer transfer opening for connecting the work chamber to the delivery outlet for the printed output of a printer that is set up in the vicinity of the work cabinet. The delivery outlet for the printer output may reach through the printer transfer opening into the work chamber or it may merely adjoin the printer transfer opening.

Abstract: An apparatus and a method detect the presence of solid particles in a liquid phase, where an at least partially transparent container encloses the solid particles and the liquid phase. The apparatus includes a camera to make digitized images in the form of arrays of pixels with their associated pixel values. The apparatus also includes an agitator device to hold the container and to impart movements to the container, transmitting kinetic energy to the mixture. The camera is aimed at a transparent portion of the container to take images of the mixture in motion. A processor unit, in electronic communication with the camera, receives and processes the digitized images of the mixture in motion, resulting in the generation of an analytical representation of the solid particles in the liquid. In this manner, the state of dissolution of the solid particles may be determined.

Abstract: A method for the preparation of samples by means of a dosage-dispensing device, a weighing system with a load receiver, a processor unit, a memory unit, and an exchangeable dosage-dispensing unit. A target container is set on the load receiver. The dosage-dispensing unit and/or the target container includes electrically insulating material. The dosage-dispensing unit has the capability to change positions relative to the load receiver. While the dosage-dispensing unit is in a first position and a target container is on the load receiver, a starting weight value is determined, the dosage-dispensing unit is brought into a second position, a dosage-dispensing cycle delivers a dosage material in a predefined amount from the dosage-dispensing unit into the target container by means of the processor unit, the dosage-dispensing unit is brought into the first position, and while the dosage-dispensing unit is at rest in the first position, an ending weight value is determined.

Abstract: A laboratory instrument with a housing containing a weighing cell has a working compartment that is connected to the housing. The working compartment has a floor, a top cover, a rear wall, a front wall and two sidewalls. Arranged in the working compartment is a load receiver which is connected to the weighing cell. Also connected to the housing is at least one guiding device which serves to guide a linear movement and simultaneous swivel movement of individual portions of the front wall or the entire front wall.

Abstract: A laboratory instrument with a housing containing a weighing cell has a working compartment that is connected to the housing. The working compartment has a floor, a top cover, a rear wall, a front wall and two sidewalls. Arranged in the working compartment is a load receiver which is connected to the weighing cell. Also connected to the housing is at least one guiding device which serves to guide a linear movement and simultaneous swivel movement of individual portions of the front wall or the entire front wall.

Abstract: A work cabinet with a work chamber that contains, on a temporary basis, a material being worked upon has a transfer opening connecting the work chamber with an ambient space of the cabinet. The transfer opening permits access to the worked material and gives access to the work chamber. A connected ventilating device provides a lower-than-ambient pressure in the work chamber. The work cabinet further has a printer transfer opening for connecting the work chamber to the delivery outlet for the printed output of a printer that is set up in the vicinity of the work cabinet. The delivery outlet for the printer output may reach through the printer transfer opening into the work chamber or it may merely adjoin the printer transfer opening.

Abstract: Electronic balance with a load carrier, further with a transfer device cooperating with the load carrier, with a draft shield enclosing a weighing compartment that is adapted to the dimension of an object to be weighed and comprises at least one closure element serving to open and close at least one loading access opening, and also with a drive mechanism serving to actuate the closure element, characterized in that the drive mechanism further comprises a position-setting member, wherein the drive mechanism together with the position-setting member and a displacement-transmitting element causes a lifting- and lowering movement of the transfer device relative to the load carrier, and wherein the position-setting member is configured for setting the transfer device and/or the load carrier into several defined positions.

Abstract: A dosage-dispensing unit serving to store and dispense pulverous or granular dosage material has a housing which includes at least one receptacle space for dosage material and an outlet orifice connected to the receptacle space. The dosage-dispensing unit further includes at least one electrostatic coagulant means which affects the build-up and/or the break-down of a closure plug consisting of dosage material and/or of an aperture shutter consisting of dosage material in the outlet orifice. The closing or narrowing of the outlet orifice thus occurs as a result of the electrostatic attraction and coagulation of dosage material leading to at least partial obstruction of the outlet orifice with the dosage material by the build-up of a closure plug or an aperture shutter.

Abstract: In the method of optimizing the dosage-dispensing process of a dosage-dispensing device, an examination takes place prior to a first dosage delivery, whether at least one flow parameter relating to the dosage-dispensing process is stored in the memory module of the dosage-dispensing unit. If a stored flow parameter is found to be present, said flow parameter is called up from the memory module. If no store flow parameter is present, a flow parameter is requested by the user by entering a request, a flow parameter is called up from a central database, or at least one flow parameter is determined by means of the first run of the dosage-dispensing process based on a default setting of the dosage-dispensing program. With the at least one flow parameter, the dosage-dispensing program is directly adapted, at least one run of the dosage-dispensing process is performed with the adapted dosage-dispensing program, and/or the at least one flow parameter is stored in the memory module.

Abstract: Electronic balance with a load carrier, further with a transfer device cooperating with the load carrier, with a draft shield enclosing a weighing compartment that is adapted to the dimension of an object to be weighed and comprises at least one closure element serving to open and close at least one loading access opening, and also with a drive mechanism serving to actuate the closure element, characterized in that the drive mechanism further comprises a position-setting member, wherein the drive mechanism together with the position-setting member and a displacement-transmitting element causes a lifting- and lowering movement of the transfer device relative to the load carrier, and wherein the position-setting member is configured for setting the transfer device and/or the load carrier into several defined positions.

Abstract: A balance (1, 101) has a weighing pan (4, 104) for receiving a load (5, 6, 25) to be weighed, and an electronic weighing module (27) which includes a measuring unit (28). The balance is equipped with an electrostatic sensor (10) which is arranged so that accumulated electrostatic charges which reside on the load can be detected as the load is placed or about to be placed on the weighing pan. The balance is operated by using the electrostatic sensor to detect electrostatic charges, transferring information on a value characterizing the magnitude of the detected electrostatic charges to the measuring unit, comparing the value against a threshold value, and triggering an action of the electronic weighing module based on the comparison.

Abstract: A balance (1, 101) has a weighing pan (4, 104) for receiving a load (5, 6, 25) to be weighed, and an electronic weighing module (27) which includes a measuring unit (28). The balance is equipped with an electrostatic sensor (10) which is arranged so that accumulated electrostatic charges which reside on the load can be detected as the load is placed or about to be placed on the weighing pan. The balance is operated by using the electrostatic sensor to detect electrostatic charges, transferring information on a value characterizing the magnitude of the detected electrostatic charges to the measuring unit, comparing the value against a threshold value, and triggering an action of the electronic weighing module based on the comparison.

Abstract: A balance (1) with a weighing pan (3) inside a weighing compartment (2) enclosed by a draft shield (4) has at least one thermoelectric module (16) that is arranged outside of the weighing compartment (2) and thermally connected to a stationary part of the balance (1). At least one vertical wall (8) of the draft shield (4) has a lower end portion in thermal connection with the thermoelectric module (16). The vertical wall (8) is configured in such a way that a temperature gradient develops in the vertical wall (8), wherein the temperature increases from the bottom to the top of the wall (8).

Abstract: A sample changer for a balance (1) with a weighing pan (18) has at least two sample carriers (3) that are spaced apart from each other. Each sample carrier is configured to receive at least one weighing-object unit and transport the weighing-object unit to the weighing pan (18). An individual draft-shield element (4) consisting at least in part of a transparent material is arranged above each of the sample carriers (3), closing off a sample space laterally and from above.

Abstract: A balance (1) with a weighing pan (3) inside a weighing compartment (2) enclosed by a draft shield (4) has at least one thermoelectric module (16) that is arranged outside of the weighing compartment (2) and thermally connected to a stationary part of the balance (1). At least one vertical wall (8) of the draft shield (4) has a lower end portion in thermal connection with the thermoelectric module (16). The vertical wall (8) is configured in such a way that a temperature gradient develops in the vertical wall (8), wherein the temperature increases from the bottom to the top of the wall (8).