Inline classification of a biological specimen including mammalian cells can include generating an alternating current (AC) electrical stimulus to an electrode structure. The electrode structure can be electrically coupled with a flow cell. A response, elicited by the electrical stimulus, can be received when a model specimen class traverses the flow cell. Using the received response, a corresponding impedance parameter value can be determined, the value indicative of a specified biophysical characteristic corresponding to the model specimen class. The first impedance parameter can be translated to a value corresponding to the specified biophysical characteristic.

A particle-measuring system for determining particle mass concentrations in aerosols has a laser diode serving as a radiation source and projecting a beam of laser light through a flowing stream of the aerosol. A receiver for receiving the light from the diode after passing through the stream and converting the received light into a measurement. A frequency radiation output of the laser diode is modulated such that the frequency is substantially greater than a cutoff frequency of the receiver so that a specifiable radiation output of the laser diode is achieved on average over a duration of a measurement signal of the receiver.

The present invention relates to a method for measuring undissolved material in a polymer solution used in the production of electrode slurry using a surface light source. The method for measuring undissolved material in a polymer solution of the present invention comprises: a solution application step of applying a polymer solution on a transparent plate; a light supplying step of supplying light with a light source to the polymer solution applied on the transparent plate; a photographing step of photographing a shape of the light transmitted through the polymer solution applied on the transparent plate; and a measuring step of confirming the number and particle size of the undissolved material in the polymer solution with a photographed image.

Among other things, a first surface is configured to receive a sample and is to be used in a microscopy device. There is a second surface to be moved into a predefined position relative to the first surface to form a sample space that is between the first surface and the second surface and contains at least part of the sample. There is a mechanism configured to move the second surface from an initial position into the predefined position to form the sample space. When the sample is in place on the first surface, the motion of the second surface includes a trajectory that is not solely a linear motion of the second surface towards the first surface.

The apparati, methods, and computer program products disclosed herein can be used to nondestructively detect undissolved particles, such as glass flakes and/or protein aggregates, in a fluid in a vessel, such as, but not limited to, a fluid that contains a drug.

The method for particle analysis includes a first magnetic susceptibility measurement step S4 of measuring a volume magnetic susceptibility of each of first particles p1; an encapsulation treatment step S5 of performing an encapsulation treatment so that the first particles p1 encapsulate an encapsulation target component pt smaller than the first particles p1; a second magnetic susceptibility measurement step S8 of measuring a volume magnetic susceptibility of each of second particles p2 as an analysis target that are the first particles p1 after the encapsulation treatment; and a step S9 of analyzing whether or not the encapsulation target component pt is encapsulated in the second particles p2 based on a result of measurement in the first magnetic susceptibility measurement step S4 and a result of measurement in the second magnetic susceptibility measurement step S8.

A particle counter and classification system and method wherein a first stage magnetometer sensor subsystem for the fluid is tuned to detect and determine the size of ferrous and/or conducting particles in the fluid above a predetermined size. A pump is configured to drive a volume of the fluid through the first stage magnetometer sensor subsystem. A processing subsystem is responsive to the first stage magnetometer sensor subsystem and is configured to count the number of ferrous and/or conducting particles above the predetermined size based on the output of the first stage magnetometer sensor subsystem and to determine and report the concentration of the ferrous and/or conducting particles above the predetermined size as a function of the size of the particles, their number, and the volume of the fluid.

An example system includes an input channel having a first end and a second end to receive particles through the first end, a sensor to categorize particles in the input channel into one of at least two categories, and at least two output channels Each output channel is coupled to the second end of the input channel to receive particles from the input channel, and each output channel is associated with at least one category of the at least two categories. Each output channel has a corresponding pump operable, based on the categorization of a detected particle in a category associated with a different output channel, to selectively slow, stop, or reverse a flow of particles into the output channel from the input channel.

Among other things, a first surface is configured to receive a sample and is to be used in a microscopy device. There is a second surface to be moved into a predefined position relative to the first surface to form a sample space that is between the first surface and the second surface and contains at least part of the sample. There is a mechanism configured to move the second surface from an initial position into the predefined position to form the sample space. When the sample is in place on the first surface, the motion of the second surface includes a trajectory that is not solely a linear motion of the second surface towards the first surface.

The disclosure relates to a method for determining a hydrodynamic size of an object, such as a nano-sized object, said method comprising the steps of: providing a fluid interface, linking said object to said fluid interface thereby providing a linked object, whereby the movement of said linked object is restricted by virtue of being linked to said fluid interface, providing and determining a hydrodynamic shear force that acts on said linked object, tracking the movement of said linked object, and calculating the hydrodynamic size of the object using the Einstein-Smoluchowski relation.