The present invention is related to the detection of formaldehyde concentrations in the air by using a coordination polymer, which comprises repeating coordination complexes with an octahedral geometry, wherein said coordination complex comprises iron (II), at least one ligand comprising an amino moiety; wherein the coordination polymer further comprises counter-ions; for the identification and/or quantification of formaldehyde.

The present invention describes methods of using Olfr90 demonstrated to bind to fungal metabolites, including a metabolite known to be detected in patients with mold (e.g. Aspergillus) infections.

The present invention describes methods of using Olfr90 demonstrated to bind to fungal metabolites, including a metabolite known to be detected in patients with mold (e.g. Aspergillus) infections.

Provided is a method for detecting and counting the relative content of a microorganism, comprising: adding a redox indicator to a growth medium to produce an indicating growth medium; the range of color variation of the redox indicator comprising three or more colors that can be easily recognized by the naked eye; diluting a sample to be tested, configuring multiple degrees of dilution, configuring multiple parallels for each degree of dilution, and growing the diluted test sample using the indicating growing medium; reading the color or absorbance of the indicating growth medium while growing and/or when growing is completed; and producing the relative content of a microorganism in the test sample on the basis of the level of color variation or the value of absorbance variation of the indicating growth medium.

Methods and systems for detecting and indicating the presence of undesirable substances in ingestible substance such as food or beverages. More specifically, systems and methods for nonvisually and concealably indicating and detecting the presence of unwanted or undesired drugs in beverages and/or food.

Methods and systems for detecting and indicating the presence of undesirable substances in ingestible substance such as food or beverages. More specifically, systems and methods for nonvisually and concealably indicating and detecting the presence of unwanted or undesired drugs in beverages and/or food.

The present invention relates to a responsive photonic coating and to a substrate provided with such a responsive photonic coating. The present invention also relates to a sensor. An object of the present invention is to provide a responsive photonic coating that can be used for simultaneously measuring the exposure to high temperature and steam, such as in an autoclave.

A composition may include, in dry form: (a) nigrosin; (b) wheat flour; and (c) whole egg. Such compositions may be used for production of test soil for assessment of the cleaning action of cleaning devices. Methods of producing a test soil for assessment of the cleaning action of cleaning devices for cleaning of vessels for human egesta, e.g., of washer-disinfectors, including dissolving the composition in an aqueous medium. A test soil may include the constituents of the composition in an aqueous medium, and such soils may be used for assessment of the cleaning action of cleaning devices. A method may assess the cleaning action of cleaning devices for cleaning of vessels for human egesta.

A sterilization challenge device for verifying the efficacy of a gas sterilization process includes an outer container, an inner container, a chemical indicator, and a cap. The outer container includes an open end, a closed end, a chamber configured to contain the inner container containing the chemical indicator, and at least one hole arranged proximate the open end. The cap is configured to engage with the outer container to close the open end, and the at least one hole is configured to provide a flow path for the gaseous sterilant into the chamber.

A system that enables automatic biological indicator crushing and determination of biological indicator type and model in incubator devices with biological indicator readers.