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A mill test report (MTR) and often also called a certified mill test report, certified material test report, mill test certificate (MTC), inspection certificate, certificate of test, or a host of other names, is a quality assurance document used in the metals industry that certifies a material's chemical and physical properties and states a product made of metal (steel, aluminum, brass or ...
a clear identifier of what type of testing was performed (e.g., "regulatory compliance testing") any associated batch numbers, sample numbers, etc. a chain of custody of the product/sample being tested, including dates, times, and relevant photos; the weight or unit count of the product/material/sample
The International Material Data System (IMDS) is a global data repository that contains information on materials used by the automotive industry. Several leading auto manufacturers use the IMDS to maintain data for various reporting requirements.
A certified reference material is a particular form of measurement standard. Reference materials are particularly important for analytical chemistry and clinical analysis. [2] Since most analytical instrumentation is comparative, it requires a sample of known composition (reference material) for accurate calibration.
Modern LIMS products now also allow for the import and management of raw assay data results. [3] Modern targeted assays such as qPCR and deep sequencing can produce tens of thousands of data points per sample. Furthermore, in the case of drug and diagnostic development as many as 12 or more assays may be run for each sample.
Better raw materials and manufacturing processes can improve durability. For home appliances and automobiles, durability is a primary characteristic of quality. Reliability refers to the time until a product breaks down and has to be repaired, but not replaced. This feature is very important for products that have expensive maintenance.
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Quality control separates the act of testing products to uncover defects from the decision to allow or deny product release, which may be determined by fiscal constraints. [6] For contract work, particularly work awarded by government agencies, quality control issues are among the top reasons for not renewing a contract.