A pressure sensor (100) for a measuring system (10) measuring concentrations of gaseous and/or aerosol components of a gas mixture with a reaction carrier (14), with a flow channel (42). The flow channel (42) forms a reaction chamber (46) with a reactant (48), that enters into an optically detectable reaction, and with a measuring device (12) with a gas port unit (5) connecting an inlet channel (16) and an outlet channel (18) to the flow channel (42) and a gas delivery unit (28). The pressure sensor (100) measures a pressure difference of a gas mixture flowing through the gas delivery assembly unit (2) and/or the flow channel (42) of the reaction carrier (14) and has an elastic element (102), which is configured to undergo deformation as a function of the pressure difference. A measuring method, a measuring device and a reaction carrier for such a measuring system are also provided.

The present invention provides a plasma treatment detection indicator including a color-changing layer that changes color by plasma treatment, exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by the plasma treatment being suppressed to the extent that electronic device properties are not affected. Specifically, the present invention provides a plasma treatment detection indicator comprising a color-changing layer that changes color by plasma treatment, the color-changing layer comprising metal oxide fine particles containing at least one element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi, the metal oxide fine particles having a mean particle size of 50 μm or less.

The invention relates to a colorimetric gas detector for determining and monitoring gaseous substances. The colorimetric gas detector can be used in any application requiring the detection of substances in a gaseous environment. The colorimetric gas detector has a photodetector, a light source positioned opposite to the photodetector, and a receiving slot for positioning a colorimetric media between the camera and the light source.

The present invention relates to active and intelligent additives having hybrid characteristics, that are compatible with polymers, are thermally and mechanically stable, are capable of releasing electrons and/or photons in the presence of chemical compounds, specifically amino compounds, amide compounds, oxygen reducing compounds, water or vapors thereof. The active and intelligent additives incorporate themselves into polymer matrices allowing the obtainment of active and intelligent polymeric articles. These active and intelligent polymeric articles may act as inhibitors of growth of microorganisms and fungi, as well as indicators of the presence of gasses, either in the atmosphere or caused by the decomposition of foodstuffs, for example.

Systems and methods are provided for tracking all chemicals, including odors, a package is exposed to throughout the shipping process. A device is attached to the package or placed within the package to extract the chemicals that are in the surrounding environment to the device. The device can extract and concentrate volatile, semi-volatile and non-volatile chemicals that the device and the corresponding package are exposed to throughout the shipping process. The extracted chemicals may then be desorbed from the device and analyzed by an analytical instrumentation method.

The present invention relates to a compound for detecting phosgene and DCP (diethyl chlorophosphate) and a composition for detecting phosgene and DCP (diethyl chlorophosphate) comprising the said compound. More precisely, the compound for detecting phosgene and DCP of the present invention can selectively detect phosgene and DCP either in the liquid phase of gas phase by detecting the changes of fluorescence and color development very quickly within a few seconds with nM sensitivity. Therefore, the compound can also be effectively used as an ingredient for the composition and kit for the detection of one or more materials selected from the group consisting of phosgene and DCP.

The present invention provides a fluorescent polymer comprising a fluorophore perylene bisimide (PBI) and oligo (p-phenylene vinylene) (OPV) functionalized with carboxy and amine functionality groups and a polystyrene (PS) backbone for the detection of volatile organic compound, a process for the detection and a kit thereof.

An apparatus having: a container, a first openable vessel within the container, an analyte within the first vessel, and a vapochromic sensor within the container. The vapochromic sensor changes color on contact with a vapor of the analyte.

A chemosensing hydrogel is provided that undergoes a colorimetric reaction in response to the detection of a biogenic amine vapor, such as a biogenic amine vapor that is a by-product resulting from food spoilage. In an embodiment, an apparatus for detection of biogenic amines, is provided that includes a hydrogel having a bimetallic iron(II)-iron(III) complex disposed within the hydrogel, wherein the hydrogel is configured to change from a first color to a second color in response to exposure to a biogenic amine.

A gas detector wherein a porous coordination polymer represented by formula (1) is supported on a supporter, the supporting amount of the porous coordination polymer per area is 0.02 mg/cm.sup.2 or more and 0.3 mg/cm.sup.2 or less,

Fe.sub.x(pz)[Ni.sub.1-yM.sub.y(CN).sub.4]  (1)

(wherein, pz=pyrazine, 0.95≦5≦1.05 , M=Pd or pt, 0≦y≦0.15).