A desorber for a spectrometer, comprising a housing, which has supply lines and discharge lines for a sample carrier gas, together with a closable opening, and an induction unit arranged in the housing, wherein the induction unit comprises a high-permeability and electrically insulating coil carrier, a coil arranged in the coil carrier, a high-permeability sample carrier that can be removed via the closable opening, wherein the sample carrier is designed as an inductive heating element, for purposes of heating a substance to be desorbed, which is applied to the sample carrier, and the coil carrier and the coil are arranged spaced apart from the sample carrier by a gap, such that the magnetic flux, generated by an alternating current flowing in the coil, flows through the sample carrier via the coil carrier and the gap.

Disclosed is a liquid impinger, for example a liquid impinger, particularly a disposable liquid impinger. The liquid impinger comprises, for example, at least one nozzle positioned in the interior and attached to the bottom portion. In some aspects, the liquid impinger comprises a polymeric material. Also disclosed are methods of making the liquid impinger comprising, for example, forming at least two components, assembling the at least two components into the liquid impinger, filling the liquid impinger with liquid, and exposing the filled liquid impinger to radiation for sterilization prior to use. Also disclosed are methods of using the liquid impinger, for example, by transporting a gas comprising analytes through the liquid impinger and transferring at least a portion of the analytes from the gas into the liquid contained therein. The method further comprises, for example, after transferring analytes form the gas into the liquid, incubating and/or detecting at least a portion of the analytes in the liquid without removing the liquid from the liquid impinger.

Air quality measurement system, method and apparatus are described. The air quality measurement system is also referred to as air constituent measurement system. Various air-quality parameters such as, for example, particulate matter, SO2, NO2, CO, O3, H2S, CO2, HCL, NH3, CH4, VOC etc. can be measured.

A mold sensor is configured with an enclosed chamber in which a nutrient-treated substrate is positioned. The mold sensor includes a sensing system that is configured to measure properties of pressure waves within the enclosed chamber. A controller operates the sensing system and is programmed to detect a presence of mold growing in the chamber based on the characteristics of the pressure wave response within the chamber.

An elemental analysis device includes a heating furnace in which a test sample that is placed in a crucible is heated so that a sample gas is generated from the test sample, an inflow path through which a carrier gas is introduced into the heating furnace, an outflow path through which a mixture gas made up of the carrier gas and the sample gas is led out from the heating furnace, a dust filter that is provided on the outflow path, an analysis mechanism that is provided on the outflow path on a downstream side from the dust filter, and that detects one or a plurality of predetermined components contained in the mixture gas, and a cleaning gas supply mechanism that supplies cleaning gas to the dust filter in an opposite direction from a direction in which the mixture gas is flowing.

A gas sampling apparatus including a housing having a housing wall and a housing opening. The gas sampling apparatus includes a sample system for extracting the gaseous sample, including a sample pipe having an opening enclosed by the housing wall and in fluid communication with the gaseous environment and filter means including a filter for filtering solid particles from the gaseous sample. The filter is enclosed by the housing wall and arranged at the opening. The gas sampling apparatus includes a central purge system to remove aggregates of solid particles deposited on one or more housing surfaces by a gaseous medium, wherein the central purge system includes a purge pipe including an outlet opening directed towards the housing opening and enclosed by the housing wall, wherein the sample system is arranged externally to the central purge system so that the sample pipe is separate from the purge pipe.

To uniformly dilute particulate matter contained in a sample gas, a diluter includes an inflow portion, a mixing portion, a discharge portion, a connection portion, and an introduction portion. The inflow portion allows a sample gas to flow in. The mixing portion has an inner diameter larger than that of the inflow portion, and mixes the sample gas with a dilution gas to generate a diluted sample gas. The discharge portion discharges the diluted sample gas. The connection portion has a first tapered part whose inner diameter increases from a side connected to the inflow portion toward a side connected to the mixing portion. The introduction portion introduces the dilution gas into an internal space from a position downstream of the connection between the first tapered part and the inflow portion.

A membrane for collecting airborne particles, the membrane taking the form of a strip composed of a matrix formed from a mixture of a polymer and of a filler that is made of an electrical conductor, a hydrophilic layer for collecting particles, on which layer is deposited said matrix so as to form at least one composite layer, the membrane including at least one region obtained via a surface treatment of the hydrophilic layer.

The present disclosure relates to methods, devices, and systems for measuring nitric oxide released from a material. For example, a method of measuring nitric oxide release from a material can include introducing a continuous flow of a carrier gas into a sample holding chamber via a carrier gas inlet at an effective flow rate, introducing an amount of the nitric oxide releasing material into the sample holding chamber via a separate sample inlet to contact the continuous flow of the carrier gas, directing the carrier gas and released nitric oxide out of the sample holding chamber via a nitric oxide outlet toward a nitric oxide detector, and quantifying an amount of released nitric oxide using the nitric oxide detector.

In order to allow an analyzer to be calibrated or a sampling channel to be purged without removing a sampling probe from a sampling location, provided are a sampling channel through which an exhaust gas from an internal combustion engine flows, an analyzer that is connected to the sampling channel and analyzes the exhaust gas, a diluter provided upstream of the analyzer in the sampling channel, a recirculated channel that branches from a branch point set between the analyzer and the diluter in the sampling channel and joins the diluter, a pump that is provided in the recirculated channel and guides part of the exhaust gas from the branch point to the diluter, an additional channel that is connected to the recirculated channel or the sampling channel and through which a calibration gas or a purge gas flows, and an opening and closing mechanism provided in the additional channel.