Methods and a system for determining a composition of a fluid from a reservoir are provided. An exemplary method includes depressurizing a single-phase fluid to atmospheric pressure to separate a gas phase from a liquid phase, recording the volume of the gas phase, determining the weight of the liquid phase, and determining an atmospheric gas-oil ratio (GOR) from the volume of the gas phase and the weight of the liquid phase. The method also includes determining the composition of the gas phase to C9+, measuring the density of the liquid phase, determining the molecular weight of the liquid phase, and determining the composition of the liquid phase to C45+. The total hydrocarbon composition of the fluid is calculated from the amount of the gas phase, the amount of the liquid phase, the composition of gas phase, the composition liquid phase, and the atmospheric GOR.

Methods and a system for determining a composition of a fluid from a reservoir are provided. An exemplary method includes depressurizing a single-phase fluid to atmospheric pressure to separate a gas phase from a liquid phase, recording the volume of the gas phase, determining the weight of the liquid phase, and determining an atmospheric gas-oil ratio (GOR) from the volume of the gas phase and the weight of the liquid phase. The method also includes determining the composition of the gas phase to C9+, measuring the density of the liquid phase, determining the molecular weight of the liquid phase, and determining the composition of the liquid phase to C45+. The total hydrocarbon composition of the fluid is calculated from the amount of the gas phase, the amount of the liquid phase, the composition of gas phase, the composition liquid phase, and the atmospheric GOR.

A high throughput gas-chromatography system for analysis of high-molecular weight additives in a polymer material, and an analysis method using same are provided. A high throughput gas-chromatography system is capable of qualitatively and quantitatively analyzing, at the same time, high-molecular weight additives in a polymer, and reducing analysis time by increasing a heating rate and a column maximum temperature.

A high throughput gas-chromatography system for analysis of high-molecular weight additives in a polymer material, and an analysis method using same are provided. A high throughput gas-chromatography system is capable of qualitatively and quantitatively analyzing, at the same time, high-molecular weight additives in a polymer, and reducing analysis time by increasing a heating rate and a column maximum temperature.

The present invention relates to a device and a method for evaluating performance of a deodorant using a superabsorbent polymer (SAP), and the device and method are capable of quantitatively evaluating deodorant performance by collecting ammonia adsorbed to deodorant materials including the SAP and measuring the amount of ammonia thereof.

The present invention relates to a device and a method for evaluating performance of a deodorant using a superabsorbent polymer (SAP), and the device and method are capable of quantitatively evaluating deodorant performance by collecting ammonia adsorbed to deodorant materials including the SAP and measuring the amount of ammonia thereof.

The present disclosure relates to methodologies, systems, apparatus, and kits for introducing a sample within a chromatography system. A makeup pump is configured to pump a makeup fluid through a first restrictor into the chromatography system upstream of the column and downstream of a mobile phase pump. The first restrictor is located upstream of a column and downstream of makeup pump and a sample fluid pump. Decreasing an output volume of the makeup pump can direct a sample fluid from the sample fluid pump through the first restrictor to the column. Increasing an output volume of the makeup pump can direct the sample fluid to a second restrictor located downstream of the makeup pump and in parallel with the column and the detector.

A microwave resonator flame ionization detector assembly includes a microwave resonator disposed proximate a flame to evaluate an ion concentration in a flame effluent. A resonant frequency of the microwave resonator is detected, and a reflection coefficient of the resonator is used to determine an electric permittivity of a material in which the resonator is immersed. The electric permittivity depends on an ion concentration proximal to the resonator, and the ion concentration is related to the concentration of hydrocarbons present in the flame.

A microwave resonator flame ionization detector assembly includes a microwave resonator disposed proximate a flame to evaluate an ion concentration in a flame effluent. A resonant frequency of the microwave resonator is detected, and a reflection coefficient of the resonator is used to determine an electric permittivity of a material in which the resonator is immersed. The electric permittivity depends on an ion concentration proximal to the resonator, and the ion concentration is related to the concentration of hydrocarbons present in the flame.

Embodiments of a gas detector with a first gas sensor having a first gas specificity and a first response time and a second gas sensor having a second gas specificity and a second response time. The first gas specificity is different than the second gas specificity, the first response time is different than the second response time, or both the first gas specificity and the first response time are different than the second gas specificity and the second response time. A readout and analysis circuit is coupled to the first and second gas sensors to read and analyze data from the first and second gas sensors, and a control circuit is coupled to the readout and analysis circuit and to the first and second gas sensors to execute logic that operates the first gas sensor, the second gas sensor, or both the first and second gas sensors.