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.

One variation of a pathogen detection system includes an air sampler and a cartridge. The air sampler includes: a housing defining an inlet and an outlet; a tunnel arranged within the housing and extending between the inlet and the outlet; a charge electrode arranged within the tunnel proximal the inlet; a cartridge receptacle arranged proximal the outlet and comprising a cartridge terminal; and a power supply configured to drive a voltage between the charge electrode and the cartridge terminal. The cartridge includes: a substrate; a collector plate arranged on the substrate and configured to collect charged bioaerosols moving through the tunnel; and a connector configured to transiently engage the cartridge receptacle to locate the substrate and the collector plate within the tunnel and electrically couple the collector plate to the cartridge terminal.

An apparatus and a method for isolating and/or preparing particles are provided.

Devices and methods for inspecting containers for the presence of foreign matter include, in at least one embodiment, at least one sampling head, at least one pressure sensor, and a filter. The at least one sampling head is configured to introduce an amount of a first fluid into a container and to remove an amount of a second fluid from the container for inspection for the presence of foreign matter. The at least one pressure sensor is configured to measure a pressure of the second fluid upon removal of the second fluid from the container. The filter is arranged in the at least one sampling head and is configured to filter the second fluid.

In order to provide an elemental analysis device that includes an electrode having a housing recess where a crucible is housed during an elemental analysis, and that is capable of making only the part of a consumed electrode tip replaceable, an elemental analysis device including a first electrode and a second electrode between which a crucible MP containing a sample is nipped, and that heats the sample by applying a current between the first electrode and the second electrode, the first electrode includes: a first electrode main body that is provided with a housing recess where the crucible MP is housed; and a first electrode tip that is provided removably to the first electrode main body in such a manner that a part thereof is exposed inside the housing recess.

Systems and methods are provided for reliably detecting aerosolized virus particles using electrochemical characteristics of the virus, and its interaction with π-conjugated conducting solid-state substrates.

An unmanned aerial vehicle detector includes an unmanned aerial vehicle, a pump/detector combination on the unmanned aerial vehicle and a tube connected at a proximal end to the pump/detector combination. The pump/detector combination is configured to draw gas samples from a distal end of the tube to the detector and to detect a level of a gas drawn from within a prescribed distance above ground level. A processor determines the wind velocity at the unmanned aerial vehicle location.

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.

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.

Disclosed herein are a group of gastric cancer VOC markers in saliva and an application thereof in the preparation of a diagnostic reagent of gastric cancer. The markers are a combination of compounds selected from the group consisting of acetaldehyde, 2-methylbutyraldehyde, isopropanol, hexanal, n-butanol, cineole, nonanal, menthone, 2-ethylhexanol, menthol, anethole and dodecanol. The diagnostic reagent is used for detecting the contents of the marker in a saliva sample of a subject to perform the diagnosis of gastric cancer.