Abstract: The invention relates to a granulator having a cutting device which is driven by a drive device and to which a material strand can be supplied, for example by means of a conveying device. The drive device is accommodated in a granulator housing. The cutting device and optionally also the conveying device are arranged in a separate module housing, which is connected in a detachable manner to the granulator housing and can be removed from same. The cutting device and/or the conveying device are connected to the respective drive device via detachable couplings. The cutting device and optionally also the conveying device can be removed from the granulator housing as a unit together with the module housing.

Abstract: A stray light reducing apparatus includes a light source and an entrance slit positioned to pass through light from the light source. A first monochromator mirror is positioned to reflect light passed through the entrance slit. A diffractive surface is positioned to receive and diffract light reflected by the first monochromator mirror. A second monochromator mirror is positioned to reflect light diffracted by the diffractive surface. An exit slit is positioned to pass through light reflected by the second monochromator mirror. A cuvette is positioned to pass through light passed through the exit slit. A long-pass interference filter is positioned to receive light from the light source, reflect light that has a wavelength below a selected value, and pass through light having a wavelength above the selected value. A first sample detector is positioned to receive light reflected by the long-pass interference filter.

Abstract: A diffuse reflectance apparatus includes a housing having a window formed therein, and a diffuse reflectance mirror spaced from the window and having an aperture extending therethrough. A light source provides a beam of light. A first mirror assembly is positioned to reflect the beam of light through the aperture such that it passes through the window. A second mirror assembly is positioned to reflect scattered light from the concave mirror to a detector.

Abstract: Superficially porous silica particles are provided as well as a one-pot process for making the superficially porous particles, the process comprising hydrolyzing and condensing a silica precursor comprising a functional group to form superficially porous particles, the superficially porous particles comprising silica microparticles having silica nanoparticles bound to the surface of the microparticles. The nanoparticles provide a porous outer layer on the microparticles. The superficially porous particles are useful as a stationary phase in liquid chromatography and allow for fast mass transfer and separation of samples.

Abstract: A spectroscopy system and method in which the optical path following the interferometer includes a Jacquinot stop having an aperture disposed substantially at its focal point. The Jacquinot stop includes a reflective surface substantially non-orthogonal to the longitudinal axis of the path and facing the source of the IR signal containing an interferogram. The aperture passes an inner portion of the incident IR signal, while the reflective surface reflects an outer portion. The reflected outer portion of the incident IR signal, which contains erroneous spectral information due to inherent flaws in the interferometer optics, is thereby effectively removed from the original incident IR signal ultimately used to irradiate the sample, and yet still be made available for use in monitoring background spectra of the sampling optics.

Abstract: An embodiment of a path length calibration system is described that comprises a swing arm coupled to a first surface; a base coupled to a second surface configured to receive the sample; a position sensor system comprising a first component coupled to the swing arm and a second component coupled to the base, wherein the position sensor system is configured to provide an output voltage when the swing arm is in a down position; and a processor configured to calibrate a zero path length using the output voltage.

Abstract: The present invention relates to a safety workbench, in which, for the purpose of calibrating the safety workbench before beginning regular operation, a device control unit is implemented to cause measurement means to ascertain an actual measured value, which is representative of a flow velocity achieved at normal fan performance, an analysis unit is implemented to compare the actual measured value to a starting setpoint value and, in case of an established deviation, to correct a stored starting limiting value in accordance with the deviation, or means for controlling the fan are implemented to operate the fan at a fan performance corresponding to a stored starting limiting value, a device control unit is implemented to cause the measurement means to ascertain an actual limiting measured value which is representative of the flow velocity achieved at the set fan performance, and a storage unit is implemented to store the actual limiting measured value as the corrected limiting value.

Abstract: An apparatus for reaction chromatography comprising: a chromatography column, the column having a fluid outlet for an eluate flow, wherein the fluid outlet is configured with two or more fluid ports, the two or more fluid ports comprising one or more reactant ports, wherein each reactant port is for connecting a reactant flow into the eluate flow to react with the eluate flow, and one or more product ports for receiving the reacted eluate flow; one or more reactant sources in fluid communication with the one or more reactant ports to provide the reactant flow; and one or more processing units in fluid communication with the one or more product ports to process the reacted eluate flow.

Abstract: The present invention relates to a centrifuge container for a centrifuge rotor, with a base body comprising an opening, a vessel bottom and a longitudinal axis, the opening and the vessel bottom being situated opposite each other and the base body extending with its overall length between the opening and the vessel bottom, and the centrifuge container comprising, along the overall length of the base body, a first section extending from the opening and a second section extending to the vessel bottom, the centrifuge container comprising structure non-detachably connected to the container for reducing the flow resistance, the structure being provided exclusively in the region of the second section.

Abstract: A modular floorstanding centrifuge comprising at least the following modules, the modules being preassembled, coherent components capable of being mounted as a whole, including a floor plate, a wall module adapted to be mounted on the floor plate together with two side wall elements capable of being attached to opposing edge regions of the floor plate, and a ceiling element adapted to interconnect the side wall elements, and a guard ring module adapted to be mounted on the wall module and comprising a guard ring attached to at least one side wall element and/or a ceiling element, wherein the ceiling element and the at least one side wall element are joined together and the at least one side wall element is mounted on the ceiling element such that it is capable of being attached to an edge region of the ceiling element pertaining to the underlying wall module.

Abstract: The present invention relates to a laboratory centrifuge having a cooling device which comprises a compressor enclosed by a compressor housing, with the compressor housing, in the region of the compressor head, being at least regionally provided with a damping material which is capable of absorbing vibrations in the range from 20 Hz to 100 Hz.

Abstract: An apparatus and a method are provided for column chromatography which provide improvements in separation resolution and detection sensitivity, comprising a chromatography column, the column having an inlet and an outlet, wherein the outlet is configured to split a flow of eluate as it leaves the column through the outlet into at least two separate portions, wherein the apparatus is configured to separately process the portions, for example to separately detect a portion or separately collect fractions of a portion with improved resolution. A split frit assembly is preferably configured to split the flow of eluate. The portions preferably emanate from different radial regions of the column. An end fitting for the column outlet may be provided having multiple ports to separately convey the portions.

Abstract: An apparatus and a method are provided for column chromatography, which provide improvements in separation resolution and detection sensitivity, comprising a chromatography column having an inlet and an outlet, wherein the inlet is configured to introduce a flow of mobile phase into the column carrying a sample, wherein the inlet is further configured to introduce the flow of mobile phase into the column in at least two separate portions which are independently controllable, and to introduce the portions into different radial regions of the column, such that the portions flow longitudinally through the column in different radial regions. The sample preferably is contained in one of the portions, especially a central portion, in a higher concentration than in the other portion(s). Preferably the flow velocities of the portions are independently controllable.

Abstract: Adapter for inserting a sample container in a centrifuge bucket, comprising a bucket-like base body, which delimits a cavity for accommodating the sample container and has a bottom region and an adjoining side wall region, the top edge of which defines an opening edge of the cavity, and an insertion opening, through which the sample container can be inserted in the cavity and which is delimited by the opening edge, at least one separation joint being present in the side wall region of the base body, which separation joint extends from the opening edge in the direction towards the bottom region and which allows for expanding the side wall region from a starting position (P1) to an expanded position (P2) by applying a force in such a way that the opening edge has a larger circumference as compared to the starting position (P1).

Abstract: The present invention relates to a thermal conductivity detector, comprising a sensor block having two cavities for the purpose of accommodating gases, wherein one of the cavities is open and the other cavity is sealed and in each of the cavities there is disposed a thermistor and also sealing elements for the purpose of sealing the cavities, which sealing elements comprise electric current feed through elements, which are electrically connected to the respective thermistor disposed in the respective cavity. At least the sealing element in the sealed cavity is a glass to metal feed through element, which is welded to the sensor block to form a gas-tight joint. The present invention further relates to a method for the production of the thermal conductivity detector.

Abstract: The present invention is directed to a spectrophotometer instrument that includes an arm that can swing between a closed position and an open position which is upward and backward of the lower position and wherein the display is moveable between a position behind the arm to a position to a side of the arm. Thus, the features herein provides the instrument user with positioning features to allow for a superior human factors user experience.

Abstract: A laboratory vial transfer device for automatically transferring laboratory vials from a transport package containing a plurality of said vials, comprising: a vial feeder configured to connect to the transport package after the package has been opened, so as to feed vials directly from the package without manual contact, wherein the vial feeder comprises a rotatable carousel having a plurality of vial receiving positions located on the carousel each for receiving a single vial and adapted to collect the vials from the opened package into respective vial receiving positions upon operation of the carousel, wherein the carousel is operable to feed the vials from their respective vial receiving positions to an exit position.

Abstract: An apparatus includes a first pedestal surface coupled to i) a swing arm and to ii) a light source. The apparatus further includes a magnet, a base plate, a mechanical stop coupled to the base plate, and a second pedestal surface mechanically coupled to said base plate and configured to receive a liquid sample, said second pedestal surface being coupled to a spectrometer. The apparatus further includes a magnetic flux sensor located between north and south magnetic flux fields of the magnet such that the magnetic flux reaching the sensor while the mechanical stop is in physical contact with the swing arm provides a linear range of output of the magnetic flux sensor, and a processor adapted to calibrate the point for minimum optical path length using a threshold magnetic flux field emitted from the magnet and detected by the magnetic flux sensor.

Abstract: The present invention is thus directed to an automated system and method of varying the optical path length in a sample that a light from a spectrophotometer must travel through. Such arrangements allow a user to easily vary the optical path length while also providing the user with an easy way to clean and prepare a transmission cell for optical interrogation. Such path length control can be automatically controlled by a programmable control system to quickly collect and stores data from different path lengths as needed for different spectrographic analysis. Such a methodology and system, as presented herein, is able to return best-match spectra with far fewer computational steps and greater speed than if all possible combinations of reference spectra are considered.