33 results about "Fluid sample analysis" patented technology

Most automatic particle classification methods produce errors. The invention provides a method for improving the accuracy of particle classification while shortening the amount of manual review time required from the operator. The method uses class weights, which are statistically-derived correction factors that accounts for frequency of classification errors. A first class weight and a second class weight are assigned to the first class and the second class, respectively. The number of particles in each of the first and the second classes is multiplied by the first class weight and the second class weight, respectively, to generate a corrected number of particles in each of the classes. If particles are reclassified, the class weights are recalculated in response to the reclassification. The method is usable with a complete classification where all the particles in a sample are classified, or a selective classification of a subset of the particles in the sample.

An assembly design for an oscillating resonator-based sensor where an oscillating crystal resonator such as a quartz crystal resonator is rigidly affixed or ‘mounted’ onto a solid substrate in such a fashion that the resonator can either rest flush against the substrate surface or upon a rigid mounting adhesive. Once cured, the mounting adhesive forms a liquid tight seal between the mounted resonator and the substrate such that only the sensing electrode surface will be exposed to fluids applied to the front side of the substrate. The mounted resonator assembly is designed in such a way that it can be interfaced with a fluid delivery system to form a liquid tight chamber or flow cell around the mounted resonator without incurring additional physical impact upon the mounted resonator. The assembled flow cell can in turn be used to direct multiple fluid streams to flow in a laminar manner over the sensing surface of the mounted resonator and by varying the rates of flow for the different laminar flowing fluid streams the total hydraulic pressure exerted on the surface of the mounted resonator can be held constant.

Apparatus and methods to analyze downhole fluids are described herein. A disclosed example method involves obtaining a sample of a downhole fluid. Additionally the example method involves ionizing at least a portion of the sample to decompose molecules having a relatively high molar mass into molecules having a relatively lower molar mass. Further, the example method involves analyzing the ionized portion of the sample to determine a parameter of the downhole fluid sample.

A cartridge for apparatus for analysing a sample comprising a fluid as a flow cell for receiving the sample. The cell is formed from a substantially rigid support surface (102), a sensor comprising an electrical mechanical transducer (92), for example a wafer of quartz crystal and adhesive means, such as double sided adhesive tape (100) attaching the sensor to the support surface. The support surface and sensor are spaced from each other by a membrane, which may form part of the double sides adhesive tape so as to define the flow cell between the support surface and the sensor. The flow cell also has an opening (for example, 111) through which, in use, the sample passes. The sensor, forming part of the flow cell, comes into contact with the sample to enable the sample to be analysed.

An automated discrete fluid sample analyzer includes a sample preparation module. The sample preparation module includes a well configured to receive a sample deposited by a pipettor and a sample preparation device in fluid communication with the well. The fluid sample is transferred from the well to the sample preparation device, and the sample preparation device prepares the fluid sample. The pipettor then aspirates the prepared fluid sample. The prepared fluid sample may be transferred from the sample preparation device back to the well, and the pipettor aspirates the prepared fluid sample from the well. In one embodiment, the sample preparation device includes a receptacle having a catalyst disposed therein. The catalyst may include a noble metal catalyst, such as cadmium. In another embodiment, the sample preparation device includes an ultraviolet lamp configured to apply ultraviolet light to the fluid sample. In yet another embodiment, the sample preparation device includes a heater configured to heat the fluid sample. In another aspect, a fluid sample is agitated to place more of the fluid sample in contact with the catalyst.

A fluid analysis system may include a stage configured to receive a sample holder including a fluid sample to be analyzed. The fluid analysis system may also include a fluid analyzer configured to monitor at least one characteristic of the fluid sample to be analyzed; and an inclined rail; wherein the stage is configured to move along the inclined rail to cause the sample holder to move with a first component of motion along an analysis axis of the fluid analyzer and simultaneously with a second component of motion orthogonal to the analysis axis of the fluid analyzer, wherein the first component of motion affects a focus of the fluid analyzer relative to at least one constituent of the fluid sample to be analyzed.

A modular analytic system includes a base, at least one fluid sample processing module configured to be removably attached to the base, at least one fluid sample analysis module configured to be removably attached to the base, a fluid actuation module positioned on the base, a fluidic network comprising multiple fluidic channels, in which the fluid actuation module is arranged to control transport of a fluid sample between the at least one sample processing module and the at least one sample analysis module through the fluidic network, and an electronic processor, in which the electronic processor is configured to control operation of the fluid actuation module and receive measurement data from the at least one fluid sample analysis module.

A check box system used for analyzing fluid sample is prepared for forming control component by a pump, a valve and a detector; using micro-processing technique to from out check box; setting a micro-pipeline in said box; connecting one end of micro-pipeline to pump and arranging a hole being used to flow in fluid sample between two ends of micro-pipeline.