Assay

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Assay

Metal purity test to confirm that the metal meets the standards for trading on a commodities exchange (commodities exchange center).

Assay

To test precious metals for their purity. This is important to commodities and futures involving precious metals, in which the quality of the underlying metals must be specified in the contract.

assay

A test to determine the purity of gold, silver, or other precious metals. Metals used for delivery of futures contracts must be assayed to verify that they meet standards established by the exchange on which the contracts trade.
References in periodicals archive ?
also the use of chromogenic assays to replace clotting assays .
This compact, benchtop analyzer performs clotting and chromogenic assays and includes system features such as autodilution and an on-board data management system capable of storing patient demographics and results.
is intended for coagulation tests based on fibrin endpoint detection by optical measurement of the initial rate of change in absorption when performing chromogenic assays.
By avoiding this interference, macrosubstrates may substantially improve the performance of chromogenic assays for measuring functional activities of coagulation factors, fibrinolytic components, complement factors, inhibitors of physiological proteinases, and cofactors of inhibitors such as heparin.