A system is provided for testing and sampling of crude oil that includes a crude oil sampler system with a circulation loop and a water cut meter incorporated into the circulation loop. The system provides for a water cut meter positioned downstream of a sample withdrawal point. As the sample of crude oil passes through the circulation loop, the water cut meter can be used to determine the percentage of water cut of the sample. After passing through the circulation loop and determination of the water cut, a secondary sub-sample of the crude oil may be drawn off from a draw-off valve. The secondary sub-sample may then be sent to a laboratory or testing center for further testing or verification of the initial water cut.

An apparatus for in-line monitoring of nitrite content in a metalworking fluid is provided, the apparatus comprising a sample inlet for receiving a sample of a metalworking fluid, a dilution inlet for receiving a dilution fluid, a reagent inlet for receiving a photoactive reagent, a reaction volume for containing a sample mixture in fluid communication with the sample inlet, dilution inlet and reagent inlet, a photometer for monitoring the sample mixture, and a flow control system for controlling fluid flow in the apparatus, to: selectively introduce the sample, the dilution fluid and/or the photoactive reagent from the respective inlets to the reaction volume to form the sample mixture, retain the sample mixture in the reaction volume and discharge the sample mixture from the reaction volume.

A device for detecting particles in a lubricating oil of a machine, comprising a particle separator; at least one particle detector; a bypass conduit for the particle-concentrating oil, fluidly connected to an oil outlet of the particle separator, concentrating the particles; and wherein the at least one particle detector is operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit.

The present invention relates to a microfluidic particle analysis device comprising an inlet in fluid communication via a main channel defining a main flow direction with an inlet manifold providing parallel fluid communication with a bypass channel of hydrodynamic resistance R.sub.bypass, and a measuring channel of hydrodynamic resistance R.sub.measuring, the measuring channel having a cross-sectional dimension in the range of from 1 μm to 50 μm and further having a sensor system for detecting a particle, wherein a flow distribution parameter X.sub.measuring=R.sub.measuring.sup.−1(R.sub.measuring.sup.−1+R.sub.bypass.sup.−1).sup.−1 is in the range from 10.sup.−6 to 0.25, wherein the angle of the measuring channel relative to the main flow direction is in the range of 0° to 60°, and wherein the angle of the bypass channel relative to the main flow direction is in the range of 0° to 60°, and the microfluidic particle analysis device further comprising an outlet in fluid communication with the bypass channel and the measuring channel. The present invention relates to a method of using the device microfluidic particle analysis.

Methods, apparatus, and systems are provided for detecting and removing microplastics from wastewater effluent. Both, automatic/remote and manual monitoring and sampling components are included to detect the presence of microplastics. The automatic monitoring and sampling component includes a TSS sensor and associated apparatus calibrated to account for non-plastic solids present in the wastewater and, thereby, more accurately determine the presence of microplastics. Efficient separation and removal of microplastics from wastewater effluent is performed by a specialized capture net apparatus having multiple sized mesh components and optional diffuser devices which perform size exclusion filtration of microplastics from the water. In an exemplary embodiment, the methods generally include diverting treated wastewater effluent from a wastewater treatment facility's main line into a wastewater sampling mechanism via an intake pipe, and then into a solids monitoring and separation mechanism which includes the specialized capture net apparatus.

The disclosure provides an instrument for determining the contents of a mixed-phase flow, such as that of a petroleum line. The instrument can use far-infrared, mid-infrared laser spectroscopy, Fourier transform spectroscopy, and Raman spectroscopy methods to determine the components of a mixture, and report the contents to a user.

An electrode cleaning and calibration system generally comprises a sensor holder assembly machined from a block of solid acrylic or similar plastic material, which can accommodate a variety of types and sizes of sensors for use in monitoring and measurement of water processing and treatment processes. Examples of sensors suitable for use in the system include pH sensors, dissolved oxygen sensors, chlorine sensors, ozone sensors, total suspended solid sensors, mixed liquor suspended solid sensors, ammonia sensors, monochloramine sensors, and ultraviolent transmittance sensors.

Methods, apparatus, and systems are provided for detecting and removing microplastics from wastewater effluent. Both, automatic/remote and manual monitoring and sampling components are included to detect the presence of microplastics. The automatic monitoring and sampling component includes a TSS sensor and associated apparatus calibrated to account for non-plastic solids present in the wastewater and, thereby, more accurately determine the presence of microplastics. Efficient separation and removal of microplastics from wastewater effluent is performed by a specialized capture net apparatus having multiple sized mesh components and optional diffuser devices which perform size exclusion filtration of microplastics from the water. In an exemplary embodiment, the methods generally include diverting treated wastewater effluent from a wastewater treatment facility's main line into a wastewater sampling mechanism via an intake pipe, and then into a solids monitoring and separation mechanism which includes the specialized capture net apparatus.

This invention concerns methods of determining properties of oil, especially crude oil with a spectrometer. This invention also concerns a crude oil analytical and single or multi-stream sampling device which is particularly suitable for the online measurement of crude oil properties with a spectrometer (8). This invention further concerns a crude oil sampling procedure which is particularly suitable for the online measurement of crude oil properties with a spectrometer.

A method and a sampling tool for collecting particles from lubrication fluid of an engine are disclosed. The particles collected may be used to conduct analysis to diagnose a condition of the engine. The tool can be detachably connectable to a lubrication system of the engine. The tool comprises an inlet for receiving lubrication fluid from the lubrication system of the engine, a filter and a pump configured to induce a flow of the lubrication fluid through the filter.