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.

Assay systems including assay apparatus and handheld assay devices for use therewith for obtaining diagnostic information of a bodily specimen. Assay devices include a cartridge housing snugly accommodating a specimen slide intended for elevation from an initial lowermost specimen introduction position to a final uppermost specimen examination position in which a bodily specimen is compressed between a cartridge housing top face and a specimen slide. Assay devices preferably include a liquid reagent dispensing arrangement for dispensing liquid reagent on a specimen slide for reacting with a bodily specimen.

A method for the production of a sol-gel based matrix resulting in a sol-gel based matrix with high stability and high porosity. The sol-gel based material may be used for the production of a composite or sensor suitable for monitoring analytes.

A method for the production of a sol-gel based matrix resulting in a sol-gel based matrix with high stability and high porosity. The sol-gel based material may be used for the production of a composite or sensor suitable for monitoring analytes.

An odorant for fuel gases for anion membrane fuel cells, which imparts a fuel gas with an odor, includes at least one or more substances selected from the group consisting of ammonia, trimethylamine, triethylamine, N,N-diethylmethylamine, N,N-dipropylmethylamine, N,N-dipropylethylamine, N,N-diisopropylmethylamine, N,N-diisopropylethylamine, dimethylamine, diethylamine, dipropylamine, ethylmethylamine, propylmethylamine, propylethylamine, methylamine, ethylamine and propylamine.

An odorant for fuel gases for anion membrane fuel cells, which imparts a fuel gas with an odor, includes at least one or more substances selected from the group consisting of ammonia, trimethylamine, triethylamine, N,N-diethylmethylamine, N,N-dipropylmethylamine, N,N-dipropylethylamine, N,N-diisopropylmethylamine, N,N-diisopropylethylamine, dimethylamine, diethylamine, dipropylamine, ethylmethylamine, propylmethylamine, propylethylamine, methylamine, ethylamine and propylamine.

Among other things, certain embodiments of the present disclosure are related to devices and methods of performing biological and chemical assays, such as but not limited to pH measurement of bio/chemical samples.

Among other things, certain embodiments of the present disclosure are related to devices and methods of performing biological and chemical assays, such as but not limited to pH measurement of bio/chemical samples.

The fiber optic probe (7) comprises: a first optical fiber (9) to convey an electromagnetic radiation towards a measuring area at an exit end of said first optical fiber (9); a second optical fiber (11) to collect an electromagnetic radiation from said measuring area, the second optical fiber comprising an entrance end arranged in the measuring area and adjacent to the exit end of the first optical fiber. The exit end of the first optical fiber and the entrance end of the second optical fiber (11) are treated so that at least part of the electromagnetic radiation conveyed along the first optical fiber exits laterally from the first optical fiber and enters laterally in the second optical fiber. Moreover, in the measuring area an indicating material (15) is arranged, indicating a parameter to be measured with the probe. The radiation exiting from the first optical fiber passes through the indicating material so that the radiation collected by the second optical fiber is modulated by the indicating material (15).

Embodiments disclose a device for testing biological specimen. The device includes a sample carrier and a detachable cover. The sample carrier includes a specimen holding area. The detachable cover is placed on top of the specimen holding area. The detachable cover includes a magnifying component configured to align with the specimen holding area. The focal length of the magnifying component is from 0.1 mm to 8.5 mm. The magnifying component has a linear magnification ratio of at least 1. Some embodiments further include a multi-camera configuration. These embodiments include a first camera module and a second camera module arranged to capture one or more images of the first holding area and the second holding area, respectively. The processor may perform different analytic processes on the captured images of different holding areas to determine an outcome with regard to the biological specimen.