Abstract: A laboratory stand comprises a holding rod for receiving instruments or measuring devices for treating or examining media or substances or mixtures which may be contained or filled into a vessel arranged next to the holding rod in the usage position, into which vessel appropriate instruments or measuring instruments can engage from above. In order to be able to perform the metering of the substances in the vessel prior to, or during, the processing in a simple manner and/or in order to be able to quickly and reliably identify weight changes, support projections are moveably mounted and provided with, or connected or provided with an operative connection to, a weighing apparatus such that the displacement of the set-up feet, which is increased in the case of increasing weight or reduced in the case of decreasing weight, can be determined as weight change.

Abstract: The invention relates to a magnetic stirrer (1) having a stirrer drive (2), a heating plate (3) serving as a surface on which a stirring vessel (4) is positioned, and a stirring rod (6) which can be introduced into the stirring vessel (4), can be or is driven by the stirrer drive (2) and comprises a magnet (6a), the stirring rod (6) and/or the magnet (6a) having and/or containing at least one SAW sensor (7) (surface acoustic wave sensor).

Abstract: A magnetic stirrer (1) has a housing (2) for accommodating a drive (3) and a holder or mounting plate (5) for a stirred vessel and a stirring magnet. A plurality of mounting feet (6) are provided for mounting the magnetic stirrer (1) on the base, which mounting feet are mounted in a movable or flexible manner and are connected to a weight measuring device or sensors belonging to a weight measuring device, with the result that the weight of the stirred material or a change in weight can be determined at any time without complicated additional weighing operations.

Abstract: A temperature measuring device (1) with a thermometer (2) has a plurality of temperature sensors (3) on one side (10), which function on an electrical basis. The thermometer (2) is immersed in a container or beaker (4) set up in a usage position on a heating plate (102) of a magnetic stirrer (100) and in a medium (5) present therein. The plurality of temperature sensors (3) are arranged spaced apart from one other vertically on the temperature measuring device (1), and are immersed in the medium (5) at different heights in the usage position. It is therefore possible firstly to recognize a temperature stratification inside the medium (5), and secondly, to detect level changes of the medium (5) in the interior of the container (4).

Abstract: Mixing, stirring or dispersing method using a corresponding apparatus (1) with a housing (2) and a container (3). The container (3) has a mixing chamber (4), into which mixing chamber (4) a rod-like element (6) projects. At the entrance into the mixing chamber (4), this rod-like element (6) is connected to a membrane (8), which membrane (8) is part of a wall (9) of the container (3). In order to process the contents of the mixing chamber (4), the rod-like element (6) is made to move, together with the membrane (8), by a drive (7). In order to avoid unintentional failure of the membrane (8), within the context of the method, the number of revolutions of the drive (7) is counted and the drive is switched off upon reaching a maximum number of revolutions permitted for the loading capability of the membrane (8) and the resulting number of load variations.

Abstract: A laboratory reactor (1) with a reaction vessel (2) for receiving media or substances to be processed has devices or units for processing or mixing media or components and for measuring, the devices or units being able to engage in the reaction vessel or reactor vessel (2) from above or below. On the lower side of the base (5), the laboratory reactor (1) has placement feet (6) which are mounted movably or flexibly and are connected to a weight measuring device or to sensors belonging to a weight-measuring device such that the weight of the product to be processed or a change in weight can be determined without complicated additional weighing operations.

Abstract: The invention relates to a magnetic stirrer (1) having a stirrer drive (2), a heating plate (3) serving as a surface on which a stirring vessel (4) is positioned, and a stirring rod (6) which can be introduced into the stirring vessel (4), can be or is driven by the stirrer drive (2) and comprises a magnet (6a), the stirring rod (6) and/or the magnet (6a) having and/or containing at least one SAW sensor (7) (surface acoustic wave sensor).

Abstract: A laboratory stand comprises a holding rod for receiving instruments or measuring devices for treating or examining media or substances or mixtures which may be contained or filled into a vessel arranged next to the holding rod in the usage position, into which vessel appropriate instruments or measuring instruments can engage from above. In order to be able to perform the metering of the substances in the vessel prior to, or during, the processing in a simple manner and/or in order to be able to quickly and reliably identify weight changes, support projections are moveably mounted and provided with, or connected or provided with an operative connection to, a weighing apparatus such that the displacement of the set-up feet, which is increased in the case of increasing weight or reduced in the case of decreasing weight, can be determined as weight change.

Abstract: A temperature measuring device (1) with a thermometer (2) has a plurality of temperature sensors (3) on one side (10), which function on an electrical basis. The thermometer (2) is immersed in a container or beaker (4) set up in a usage position on a heating plate (102) of a magnetic stirrer (100) and in a medium (5) present therein. The plurality of temperature sensors (3) are arranged spaced apart from one other vertically on the temperature measuring device (1), and are immersed in the medium (5) at different heights in the usage position. It is therefore possible firstly to recognize a temperature stratification inside the medium (5), and secondly, to detect level changes of the medium (5) in the interior of the container (4).

Abstract: A laboratory reactor (1) with a reaction vessel (2) for receiving media or substances to be processed has devices or units for processing or mixing media or components and for measuring, the devices or units being able to engage in the reaction vessel or reactor vessel (2) from above or below. On the lower side of the base (5), the laboratory reactor (1) has placement feet (6) which are mounted movably or flexibly and are connected to a weight measuring device or to sensors belonging to a weight- measuring device such that the weight of the product to be processed or a change in weight can be determined without complicated additional weighing operations.

Abstract: The invention relates to a laboratory apparatus (1) which comprises an electric drive (4), and which is equipped with a device (10) with at least one sensor (13) for detecting vibrations, oscillations or imbalances. Said device (10) fits together with a mating coupling located on the laboratory apparatus (1) by means of a coupling (11) located on said device. Once in the coupled position, the device is connected to the laboratory apparatus (1) or to the controller or to the drive of said apparatus, either wirelessly or via electrical contacts. If any vibrations, oscillations or imbalances occur, they are detected by the sensor (13), which is connected or wired to the closed- or open-loop control of the drive motor via the connection between the coupling (11) and the mating coupling (12), and which can switch off the drive motor (4) or change the speed thereof in the event of undesired or dangerous oscillations, vibrations or imbalances.

Abstract: The invention relates to a stirring device (1) that comprises a stirring tool which can be introduced into a mass or liquid that is to be stirred, a drive motor (4) that drives said stirring tool, a housing (5) enclosing said drive motor (4) and a fastening point (6) for securing said stirring device in a working position. The stirring device (1) has at least one sensor (11) for detecting imbalances which preferably is linked or connected to the open- and closed-loop control systems of the drive motor (4), and which can switch off said drive motor (4) or change the speed thereof in the event of undesired or dangerous oscillations or vibrations.

Abstract: A laboratory device unit (1) for processing or analyzing substances, mixtures or media, is provided having functional elements provided in or on a laboratory device (3) for carrying out said processing and/or analyzing. At least two remote controls (2, 6) are provided, wherein a range of functions of the functional elements can be used to a lesser extent with the one remote control (6) than with the other remote control (2).

Abstract: Mixing, stirring or dispersing method using a corresponding apparatus (1) with a housing (2) and a container (3). The container (3) has a mixing chamber (4), into which mixing chamber (4) a rod-like element (6) projects. At the entrance into the mixing chamber (4), this rod-like element (6) is connected to a membrane (8), which membrane (8) is part of a wall (9) of the container (3). In order to process the contents of the mixing chamber (4), the rod-like element (6) is made to move, together with the membrane (8), by a drive (7). In order to avoid unintentional failure of the membrane (8), within the context of the method, the number of revolutions of the drive (7) is counted and the drive is switched off upon reaching a maximum number of revolutions permitted for the loading capability of the membrane (8) and the resulting number of load variations.

Abstract: A laboratory device unit (1) for processing or analyzing substances, mixtures or media, is provided having functional elements provided in or on a laboratory device (3) for carrying out said processing and/or analyzing. At least two remote controls (2, 6) are provided, wherein a range of functions of the functional elements can be used to a lesser extent with the one remote control (6) than with the other remote control (2).

Abstract: A laboratory reactor (1) with a reaction vessel (2) for receiving media or substances to be processed has devices or units for processing or mixing media or components and for measuring, the devices or units being able to engage in the reaction vessel or reactor vessel (2) from above or below. On the lower side of the base (5), the laboratory reactor (1) has placement feet (6) which are mounted movably or flexibly and are connected to a weight measuring device or to sensors belonging to a weight-measuring device such that the weight of the product to be processed or a change in weight can be determined without complicated additional weighing operations.

Abstract: A magnetic stirrer (1) has a housing (2) for accommodating a drive (3) and a holder or mounting plate (5) for a stirred vessel and a stirring magnet. A plurality of mounting feet (6) are provided for mounting the magnetic stirrer (1) on the base, which mounting feet are mounted in a movable or flexible manner and are connected to a weight measuring device or sensors belonging to a weight measuring device, with the result that the weight of the stirred material or a change in weight can be determined at any time without complicated additional weighing operations.

Abstract: A magnetic stirrer (1) with a magnet (3) driven in a rotating fashion by an electric motor (2) for the activation of a stirring bar magnet (7) inside a container (5) filled with a medium (6) has a digitally operated regulator (8), implemented with software, that is a software regulator. With this regulator, the rotational drive speed of the motor (2) can be held constant. At the same time, the change in the regulated quantity of this regulator (8) is detected and, in the event of a change in load, is reported to or displayed for the user as a trend or tendency of the viscosity change of the medium (6). In this way, the regulation of a constant rotational motor speed can be used at the same time for detecting changes in viscosity of the stirred medium (6).