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A 19th-century assay laboratory in Tombstone Courthouse State Historic Park, Arizona. A model of a late 19th-century Canadian seal used to certify the quality of assayed gold. A metallurgical assay is a compositional analysis of an ore, metal, or alloy, usually performed in order to test for purity or quality.
An acid test is a qualitative chemical or metallurgical assay utilizing acid. Historically, it often involved the use of a robust acid to distinguish gold from base metals . Figuratively, the term represents any definitive test for attributes, such as gauging a person's character or evaluating a product's performance.
Bulk leach extractable gold, more commonly shortened to BLEG, is a geochemical sampling/analysis tool used during exploration for gold.It was developed in the early 1980s to address concerns relating to the accurately measuring fine grained gold, and dealing with problems associated with sample heterogeneity.
GTSO Excited by Surface Sample Assay Results SAN JOSE, Calif.--(BUSINESS WIRE)-- Green Technology Solutions, Inc. (OTCBB:GTSO) announced that the company is thrilled by new assay data collected on ...
The Quantiferon-TB Gold test (QFT-G) is a whole-blood test for use as an aid in diagnosing Mycobacterium tuberculosis infection, including latent tuberculosis infection (LTBI) and tuberculosis (TB) disease. [15] This test was approved by the U.S. Food and Drug Administration (FDA) in 2005.
As a result of the Benelux treaty the guarantee tax was abolished in 1953. At the same time gold and silver fineness standards were adapted to conform to international standards. Also the assaying of platinum was introduced in 1953. In 1987, the assay system was privatized and since 1988 has been located in only an office at Gouda.
An assay (analysis) is never an isolated process, as it must be accompanied with pre- and post-analytic procedures. Both the communication order (the request to perform an assay plus related information) and the handling of the specimen itself (the collecting, documenting, transporting, and processing done before beginning the assay) are pre-analytic steps.
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