In one embodiment, authentication of a beverage is performed by forming an airtight seal with a bottle that contains the beverage, the bottle being sealed with a closure, applying a vacuum to the bottle to draw a sample from the closure that includes traces of the beverage, collecting the sample over time as the vacuum is applied to the closure, and performing testing on the collected sample.

A sample extraction device and a desorption device for use in gas chromatography (GC), gas chromatography-mass spectrometry (GCMS), liquid chromatography (LC), and/or liquid chromatography-mass spectrometry (LCMS) are disclosed. In some examples, the sample extraction device includes a lower chamber holding a sorbent. The sample extraction device can extract sample headspace gas from a sample vial by placing the sorbent inside the vial and creating a vacuum to increase recovery of low volatility compounds, for example. Once the sample has been collected, the sample extraction device can be inserted into a desorption device. The desorption device can control the flow of a carrier fluid (e.g., a liquid or a gas) through the sorbent containing the sample and into a pre-column and/or a primary column of a chemical analysis device for performing GC, GCMS, LC, LCMS, and/or some other chemical analysis process.

An air monitoring system with a controller in a computer system that operates to control a pump system to move air from a collection port for a cavity as diverted air to a tube connected to the collection port, move the diverted air into an input port of an air interface connected to the tube, through a chamber in the air interface, and out of a pump port of the air interface without increasing a pressure of the diverted air greater than a pressure level for a gas analyzer system to analyze an air sample collected from the diverted air. The controller operates to control the gas analyzer system connected to a sampling port in the air interface by a probe to obtain the air sample from the diverted air moving through the air interface and analyze the air sample to determine a set of components in the air sample.

There is provided a system including a monitoring unit that analyzes, using a sensor, components of a first gas which may include first components and a pre-separation unit disposed upstream of the monitoring unit. The pre-separation unit includes: a first supply line that supplies the first gas to the monitoring unit; a second supply line that supplies a second gas, which includes components obtained by removing the first components from the first gas using a first separator, to the monitoring unit; and an automatic valve station that periodically switches between the first supply line and the second supply line to alternately supply the first gas and the second gas to the monitoring unit.

The invention relates to an apparatus for analyzing reactions, comprising at least one reactor (1) and at least two sample vessels (13), wherein, in the case of an apparatus having one reactor (1), the reactor (1) is connected to at least two sample vessels (13), and, in the case of an apparatus having more than one reactor (1), each reactor (1) is connected to at least one sample vessel (13). The invention further relates to a method of analyzing reactions in such an apparatus.

The present disclosure provides a temperature control system of a rice paddy methane flux collecting device, which comprises: a chamber body having a collecting space in which a certain number of rice grains are located; a chamber door configured to open and close an upper side of the collecting space; a collecting unit configured to collect a sample gas in the collecting space; a heating unit and a cooling unit configured to increase or decrease the temperature in the collecting space; a circulation unit for circulating the gas in the collecting space; a ventilation unit configured to ventilate the collecting space; an external temperature sensor and an internal temperature sensor for measuring external and internal temperatures of the collecting space; and a temperature controller configured to control the above units to maintain the temperature in the collecting space to be equal to the external temperature.

A gas analysis system for engaging a sealed container to withdraw and analyze gas from the sealed container, the system comprising: a penetration implement configured to create an opening to permit withdrawal of gas from the container; a chamber operatively coupled to the penetration implement for receiving gas from the container; a gas analyzer; a seal configured to engage the container to enable the system to maintain an enclosed volume comprising the chamber and an interior of the container after the penetration implement has created an opening in the container; and a mechanism to effect flow of gas from the container to the chamber, and thereafter from the chamber to the gas analyzer, the mechanism comprising a first valve operatively coupled to the penetration implement, and a connection pipe configured to connect with the gas analyzer; wherein the first valve is movable between a first position in which it permits flow of gas from the container to the chamber, and prevents gas from escaping from the enclosed volume or being contaminated, and a second position in which it permits flow of gas from the chamber to the connection pipe and the gas analyzer.

A hydrocarbon generation pyrolysis simulation experimental device for centrifugal continuous gas sampling of a hydrocarbon source rock, including a centrifugal turntable, a motor, a quartz sample tube, a heating set, a cooling set, a rotary joint mounted coaxially with a rotating shaft of the centrifugal turntable, a vacuum pump, and vacuum gas collecting pipes, wherein a sealing plug is arranged at an orifice of the quartz sample tube, a thermocouple and a first exhaust pipeline connected with an inlet of the rotary joint are mounted on the sealing plug, the rotary joint is communicated with a vacuum pump through a second exhaust pipeline, a plurality of vacuum gas collecting pipes are respectively communicated with the second exhaust pipeline through an electromagnetic valve, a vacuum pump switching valve is mounted on the second exhaust pipeline at an inlet end of the vacuum pump, and a control circuit board is mounted on the centrifugal turntable.

A gas detection system includes a first sensor unit that outputs a voltage corresponding to a concentration of a specific gas, a storage tank capable of storing a sample gas or a purge gas to be supplied to the first sensor unit, and a control unit. The control unit detects a type and a concentration of a gas contained in the sample gas on the basis of a detection result of the first sensor unit. The control unit sets a collection period during which a gas in a predetermined space is collected into the storage tank as the sample gas or the purge gas and a supply period during which the sample gas or the purge gas is supplied to the first sensor unit such that the collection period and the supply period fall in different time slots.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.