Abstract: A pipette with an adjustable dosing volume comprises a housing connected to at least one seat configured to releasably hold a pipette tip. A displacement device is positioned within the housing and configured to aspirate and discharge liquid from the pipette tip. A stroke rod is coupled to the displacement element and configured to be longitudinally displaced relative to the housing to displace the displacement device. A catch sleeve is rotatably mounted within the housing and is connected to the stroke rod. An adjusting sleeve configured to engage a transducer shaft that is rotatably mounted within the housing and comprises a countershaft of a gearbox that is configured to be shifted between different shift stages. Each shift stage comprises different gear ratios between a rotational speed of the adjusting sleeve and a rotational speed of the catch sleeve. The different gear ratios enable coarse volume adjustment and fine volume adjustment.

Abstract: A pipette for use with a pipette tip includes a chassis. An apparatus is coupled to the chassis and is configured to detachably hold at least one pipette tip. A drive apparatus is coupled to the chassis and is configured to displace a displacement element to suck liquid specimens into the pipette tip and eject the specimens from the pipette tip. A tubular pipette housing is configured to surround and connect to the chassis. The longitudinal direction of the chassis is aligned in the longitudinal direction of the pipette housing. The chassis includes multiple chassis elements which are arranged behind one another and are connected to one another. The apparatus for detachably holding at least one pipette tip and the drive apparatus are connected to one or more of the multiple chassis elements.

Abstract: A pipette with an adjustable volume comprises a housing comprising an outside surface, at least one seat defining an opening, and a displacement apparatus defining a displacement chamber comprising a displacement element configured to be displaced therein. A stroke rod is coupled to the displacement element and configured to be displaced relative to the housing order to displace the displacement element. An adjusting apparatus is configured to adjust a position of an upper stop in the housing, a display apparatus is configured to display a set dosing volume, and a coupling apparatus is positioned between the adjusting apparatus and the display apparatus. The coupling apparatus is configured to couple the adjusting apparatus to the display apparatus in an engaged state and configured to uncouple the adjusting apparatus from the display apparatus i.n a disengaged state.

Abstract: An electronic laboratory metering system for liquids includes an electrical hand-held metering device (2) having at least one operation sensor unit (5) that detects operation of the hand-held metering device (2) and generates operating data and stores same in a storage apparatus (6), wherein the hand-held metering device (2) has an interface module (7) for connecting the hand-held metering device (2) to an external network access apparatus (4) for transferring the operating data; the metering system (1), specifically a data processing system (3), has a comparison unit (9) to compare operating data with target operating data and/or to compare context parameter data from the context parameter sensor unit (8) with target context parameter data and to generate a comparison result. The metering system (1) includes a documentation unit (10) designed to generate and store log data records including at least the operating data and/or the context parameter data.

Abstract: A pipette with an adjustable dosing volume comprises a housing connected to at least one seat configured to releasably hold a pipette tip. A displacement device is positioned within the housing and configured to aspirate and discharge liquid from the pipette tip. A stroke rod is coupled to the displacement element and configured to be longitudinally displaced relative to the housing to displace the displacement device. A catch sleeve is rotatably mounted within the housing and is connected to the stroke rod. An adjusting sleeve configured to engage a transducer shaft that is rotatably mounted within the housing and comprises a countershaft of a gearbox that is configured to be shifted between different shift stages. Each shift stage comprises different gear ratios between a rotational speed of the adjusting sleeve and a rotational speed of the catch sleeve. The different gear ratios enable coarse volume adjustment and fine volume adjustment.

Abstract: A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette, wherein the syringe is detachably connected to the pipette, at option, the dosing step size is set, or the dosing step size set before is maintained, the dosing volume adjusted via the dosing step size is indicated by means of the indicating equipment, the maximum number of dosing steps possible without refilling the syringe, with the set dosing step size and completely filled syringe is indicated by means of the indicating equipment, liquid is aspirated into the syringe, a reverse stroke is performed after the syringe is filled with liquid, dosing steps are performed, the performed dosing steps are counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated by means of the indicating equipment, after performing the maximum number of dosing steps possible wi

Abstract: A mullion-transom structure has a supporting profiled element on which at least one filling element is retained at an edge, and a pressing strip by which at least one filling element is pressed toward the supporting profiled element. The pressing strip is retained on the supporting profiled element by at least one fastener, which fastener engages in a groove on the supporting profiled element. The groove is formed with an undercut and the at least one fastener is displaceably retained with a head segment in the groove. Preferably, the fastener embodies a bolt connected to a head segment, which head segment is pivotably held in a pre-mounted position on the groove of the supporting profiled element.

Abstract: A mullion-transom structure includes a support profile upon which two grooves are provided on one side. A sealing strip is fixed on each of grooves. A filling element is held at an edge on each of the sealing strips and a middle groove, on which at least one fastener for holding a pressure strip is fixed, secures the two filling elements. The middle groove has groove walls that are accommodated between the sealing strips. A contact plane of the filling elements on the sealing strips is arranged closer to the pressure strip than the groove walls of the middle groove. The middle groove has a groove base, at which a hollow chamber is formed on the side facing away from the groove.

Abstract: A method for printing an image at multiple positions on a golf ball is disclosed herein. The plurality of locations for the image is preferably ten. The image is preferably a pentagon. The image is alternatively a hexagon or a circle.

Abstract: A mullion-transom structure includes a support profile upon which two grooves are provided on one side. A sealing strip is fixed on each of grooves. A filling element is held at an edge on each of the sealing strips and a middle groove, on which at least one fastener for holding a pressure strip is fixed, secures the two filling elements. The middle groove has groove walls that are accommodated between the sealing strips. A contact plane of the filling elements on the sealing strips is arranged closer to the pressure strip than the groove walls of the middle groove. The middle groove has a groove base, at which a hollow chamber is formed on the side facing away from the groove.

Abstract: A method for fabricating a concrete slab upon a surface, the concrete slab having a final thickness and having, upon drying, a maximum dry density, the method including steps of providing a body of no-slump concrete, the no-slump concrete including a combination of aggregate and paste; dispensing the no-slump concrete upon the surface in an even depth layer which has an upper surface and includes an air volume, a portion of the paste residing at an upper surface of the even depth layer; removing a portion of the air volume from the no-slump concrete layer by compaction; trowel mulching the paste which resides at the upper surface; and trowel transporting the mulched paste horizontally over the upper surface to form a smooth concrete paste upper slab surface.

Abstract: The invention relates to a pipetting apparatus, for pipetting a fluid sample in accordance with at least one mode of operation of the pipetting apparatus, which is controlled by an operating parameter set, which is associated with a corresponding mode of operation, wherein the electric control device of the pipetting apparatus is designed to automatically store the at least one parameter value set determined by the user to be the at least one historic parameter value set for this mode of operation in the memory device, and is designed to provide, after the operating parameter set for this mode of operation has changed, the at least one automatically stored historic parameter value set for this mode of operation again for the subsequent control of the at least one, same, pipetting process. The invention also relates to a method for operating the pipetting apparatus.

Abstract: A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette, wherein the syringe is detachably connected to the pipette, at option, the dosing step size is set, or the dosing step size set before is maintained, the dosing volume adjusted via the dosing step size is indicated by means of the indicating equipment, the maximum number of dosing steps possible without refilling the syringe, with the set dosing step size and completely filled syringe is indicated by means of the indicating equipment, liquid is aspirated into the syringe, a reverse stroke is performed after the syringe is filled with liquid, dosing steps are performed, the performed dosing steps are counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated by means of the indicating equipment, after performing the maximum number of dosing steps possible wi

Abstract: A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette. The syringe is detachably connected to the pipette. The dosing step size is set, or the dosing step size set before is maintained. The dosing volume adjusted via the dosing step size is indicated. Liquid is aspirated into the syringe. Dosing steps are performed, counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated. After performing the maximum number of dosing steps possible without refilling the syringe, either the syringe is detached, or the steps are performed again. The overall performed number of dosing steps with the set dosing step size is counted, and/or the number of dosing steps still possible without refilling is determined and indicated.

Abstract: A method for fabricating a concrete slab upon a surface, the concrete slab having a final thickness and having, upon drying, a maximum dry density, the method including steps of providing a body of no-slump concrete, the no-slump concrete including a combination of aggregate and paste; dispensing the no-slump concrete upon the surface in an even depth layer which has an upper surface and includes an air volume, a portion of the paste residing at an upper surface of the even depth layer; removing a portion of the air volume from the no-slump concrete layer by compaction; trowel mulching the paste which resides at the upper surface; and trowel transporting the mulched paste horizontally over the upper surface to form a smooth concrete paste upper slab surface.

Abstract: A handheld pipetting apparatus for metering liquids, with a handleable pipette housing, at least one accommodation for a fastening portion of a syringe cylinder of a syringe, at least one plunger accommodation in an accommodation body for a plunger fastening portion of a syringe plunger of the syringe, syringe and plunger gripping levers for detachably holding the fastening portion in the accommodation and the plunger fastening portion in the plunger accommodation, at least one displacement device with a displacement chamber and a shiftable chamber wall limiting the same, for displacing a fluid; at least one seat for detachably holding a pipette point, a channel, connecting a hole in the seat with a displacement chamber, and at least one drive device, which is connected to couplable with the accommodation body the and/or the chamber wall, for shifting the accommodation body with respect to the accommodation, the and/or the chamber wall with respect to the displacement chamber.

Abstract: A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette. The syringe is detachably connected to the pipette. The dosing step size is set, or the dosing step size set before is maintained. The dosing volume adjusted via the dosing step size is indicated. Liquid is aspirated into the syringe. Dosing steps are performed, counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated. After performing the maximum number of dosing steps possible without refilling the syringe, either the syringe is detached, or the steps are performed again. The overall performed number of dosing steps with the set dosing step size is counted, and/or the number of dosing steps still possible without refilling is determined and indicated.

Abstract: A pipette for actuating a syringe, with a bar-shaped housing, a first fixture with a first opening at the lower end of the housing for putting in a first fastening portion on the upper edge of a cylinder of the syringe, a fixture body with a second fixture and a second opening on the lower end of the housing, for putting in a second fastening portion on a piston of the syringe, an actuating element, a tooth bar connected to the fixture with a tooth in the housing, a pawl, pivotally mounted on the actuating element in the housing, an adjusting element for adjusting the step size of the steps, a covering, movably arranged on the tooth bar at the side of the pawl, and a coupling element arranged on the covering.

Abstract: The invention relates to a pipetting apparatus, for pipetting a fluid sample in accordance with at least one mode of operation of the pipetting apparatus, which is controlled by an operating parameter set, which is associated with a corresponding mode of operation, wherein the electric control device of the pipetting apparatus is designed to automatically store the at least one parameter value set determined by the user to be the at least one historic parameter value set for this mode of operation in the memory device, and is designed to provide, after the operating parameter set for this mode of operation has changed, the at least one automatically stored historic parameter value set for this mode of operation again for the subsequent control of the at least one, same, pipetting process. The invention also relates to a method for operating the pipetting apparatus.