Malvern Panalytical Inc.

Malvern Instruments Limited

Vishal Patil

E Neil Lewis

John McCaffrey

Kenneth Haber

Samiul Amin

Peter Bennett

Kevin Dahl

Ronan O'Brian

Rohit Goswami

Edward A Esposito

Ben E Pattison

Peter Bennet

Alon Vaisman

An apparatus () for characterizing particles, comprising: a microscope objective with an optical axis and a depth of field; a holder cell () configured to position the particles in a generally planar volume below the microscope objective, the planar volume being substantially normal to the optical axis and having a depth that is less than or equal to the depth of field, wherein a portion of the cell holder () for positioning in the optical axis of the microscope objective is substantially free of significant spectral features in a Raman spectral range; an x-y stage () to move the microscope objective relative to the holder cell () in x and y directions to align particles with the optical axis of the microscope objective while the particles are held by the holder cell (), a detector () for acquiring an image of a particle through the microscope objective, a laser operable to illuminate a particle held by the holder cell (), a Raman spectrometer () arranged to obtain a spectrum including the Raman spectral range from the illuminated particle, and characterizing logic operative to characterize the particle based on image processing operations performed on the acquired image and based on the Raman spectrum. The holder cell () comprises a first plate () and a second plate () that are separated by a predetermined distance defining the planar volume depth.

Suspended particle characterization system

A method of determining thermal properties of a sample using differential scanning calorimetry (DSC), the method comprises injecting a first separation fluid, a sample plug, and a second separation fluid into a sample cell. The first separation fluid and the sample plug have a first separation interface, and the sample plug and the second fluid have a second separation interface. The method further comprises injecting a reference fluid into a reference cell, heating the sample cell and reference cell, and determining thermal properties of the sample using DSC analysis.

Differential scanning calorimetry method and apparatus

Viscometers and viscometry methods are disclosed. In one general aspect, a fluid is driven through capillary tubes with different inside volumes, and successive images of the fluid are acquired as it advances through the inside volume of the capillary tubes. A range of different viscosity values of the fluid are derived from the successive acquired images, and results of this step are reported in a manner that provides insight into non-Newtonian effects in the fluid. In another general aspect, a viscosity value is selected based on detected pressure levels.

Imaging microviscometer

The invention relates to methods and apparatus for detecting properties of heterogeneous samples, including detecting properties of particles or fluid droplets in industrial processes. Embodiments disclosed include a particle characterization method, comprising: providing a fluid containing suspended particles; causing at least a first subset of the suspended particles to flow past a first two-dimensional array detector (); illuminating the first subset of suspended particles as they flow past the first two-dimensional array detector () in the fluid; acquiring a plurality of images of the first subset of particles as they flow past the first two-dimensional array detector () in the fluid; and automatically counting the particles in the images.

Heterogeneous fluid sample characterization

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Columbia, MD, United States of America

Vishal Patil