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A desiccator, an airtight container, is used to dry samples and store hygroscopic materials under atmospheric or vacuum pressure. Sometimes it is referred to as dehumidifiers or dehydrators. A...

Hypersensitivity refers to an exaggerated or unnecessary reaction produced by the host immune system. It is an immunological dysfunction, mainly targeted at innocuous antigens with consequent tissue...

Sterility testing of pharmaceutical or medical products helps assess whether they are free from contaminating microorganisms. These products should pass sterility testing because unsterile medical...

Bioburden describes the number of viable microorganisms present in a product or on a sterile barrier system. The bioburden may be introduced by various sources like raw materials, environment,...

An analytical balance is the most common laboratory balance that determines the mass of chemicals or objects with high accuracy. As a highly sensitive instrument, it can measure small masses from...

Serial dilution is a  series of sequential dilutions, each with the same dilution factor, where the diluted material of the previous step is used to make the subsequent dilution.  Agar...