A method for selecting a demulsifier and its concentration that is most efficient in separating water from oil includes mixing dry oil with a demulsifier to obtain a mixture having a first concentration; generating water droplets inside the mixture; pumping the water droplets and the mixture into a micro-fluidic channel; sending a laser beam through the micro-fluidic channel; recording images of the water droplets in the mixture with a camera; and calculating a percentage of the water droplets that coalescence inside the micro-fluidic channel when free-falling through the mixture, due to gravity.

A method for selecting a demulsifier and its concentration that is most efficient in separating water from oil includes mixing dry oil with a demulsifier to obtain a mixture having a first concentration; generating water droplets inside the mixture; pumping the water droplets and the mixture into a micro-fluidic channel; sending a laser beam through the micro-fluidic channel; recording images of the water droplets in the mixture with a camera; and calculating a percentage of the water droplets that coalescence inside the micro-fluidic channel when free-falling through the mixture, due to gravity.

Aspects relate to an optical fluid analyzer including a fluid cell configured to receive a sample fluid. The optical fluid analyzer further includes optical elements configured to seal the fluid cell on opposing sides thereof and to allow input light from a light source to be sent through the fluid cell and output light from the fluid cell to be input to a spectrometer. The optical fluid analyzer further includes a machine learning (ML) engine, such as an artificial intelligence (AI) engine, that is configured to generate a result defining at least one parameter of the fluid based on a spectrum produced by the spectrometer.

Provided is a detector assembly for determining a ratio of lactate to pyruvate from dialysis, said detector assembly comprising: a first pump, a dialysis probe, a first tube fluidically coupling the first pump to an inlet of the dialysis probe, an infrared (IR) detector, a second tube fluidically coupling an outlet of the dialysis probe to the IR detector, and a controller. The first pump pumps a perfusate at a first flow rate to the dialysis probe, via the first tube, and to, in turn, pump a dialysate at a second flow from the dialysis probe to the IR detector, via the second tube. The IR detector detects respective absorbances due to lactate and pyruvate in the dialysate, and the controller determines the ratio of lactate to pyruvate in the dialysate.

Provided is a detector assembly for determining a ratio of lactate to pyruvate from dialysis, said detector assembly comprising: a first pump, a dialysis probe, a first tube fluidically coupling the first pump to an inlet of the dialysis probe, an infrared (IR) detector, a second tube fluidically coupling an outlet of the dialysis probe to the IR detector, and a controller. The first pump pumps a perfusate at a first flow rate to the dialysis probe, via the first tube, and to, in turn, pump a dialysate at a second flow from the dialysis probe to the IR detector, via the second tube. The IR detector detects respective absorbances due to lactate and pyruvate in the dialysate, and the controller determines the ratio of lactate to pyruvate in the dialysate.

A component measurement apparatus includes: a chip insertion space for inserting a component measurement chip provided with a reagent that reacts with a component to be measured in a sample; a light emitting unit configured to emit radiation light to the component measurement chip in a state in which the component measurement chip is inserted into the chip insertion space; a light receiving unit configured to receive light transmitted through or reflected from the component measurement chip; and a control unit configured to determine whether there is a possibility that an incorrect processing mode has been selected for execution.

A component measurement apparatus includes: a chip insertion space for inserting a component measurement chip provided with a reagent that reacts with a component to be measured in a sample; a light emitting unit configured to emit radiation light to the component measurement chip in a state in which the component measurement chip is inserted into the chip insertion space; a light receiving unit configured to receive light transmitted through or reflected from the component measurement chip; and a control unit configured to determine whether there is a possibility that an incorrect processing mode has been selected for execution.

Systems and methods for detecting photothermal effect in a sample are described herein. In these systems and methods, a pump source is configured to generate a pump pulse train, a probe source is configured to generate a probe pulse train and is synchronized with the pump pulse train, and a camera collects the resulting data. The camera is configured to collect a first signal corresponding to a hot frame, wherein the hot frame includes visible probe beam as modified by a pump beam and a second signal corresponding to a cold frame, wherein the cold frame includes visible probe beam that has not been modified by a pump beam. A processor can subtract the second signal from the first signal to detect the photothermal effect.

Systems and methods for detecting photothermal effect in a sample are described herein. In these systems and methods, a pump source is configured to generate a pump pulse train, a probe source is configured to generate a probe pulse train and is synchronized with the pump pulse train, and a camera collects the resulting data. The camera is configured to collect a first signal corresponding to a hot frame, wherein the hot frame includes visible probe beam as modified by a pump beam and a second signal corresponding to a cold frame, wherein the cold frame includes visible probe beam that has not been modified by a pump beam. A processor can subtract the second signal from the first signal to detect the photothermal effect.

Provided is a urea solution sensor that can accurately measure a concentration of urea. The ammonia concentration sensor (1) includes: a light source (10) that emits measurement light toward a measurement subject, the measurement light including near-infrared light; a light reception unit (20) that receives transmitted light or reflected light from the measurement subject; and an analysis unit (30) that analyzes a concentration of urea contained in the measurement subject based on a spectrum of light which has been received by the light reception unit (20).