Assay

Name:
Assay
Detailed information:
(1) The quantitative determination by chemical analysis of metallic values in an ore. Ores are assayed by heat fractionation. (2) Dry assay refers to the determination of metal values in ores by chemical methods not involving the use of solutions. (3) Assay value refers to the proportion of precious metal indicated in ounces of metal per ton of ore. (4) Wet assay is the chemical determination of metal per ton of ore. (5) Pharmaceutical products are assayed to validate the amount of drug present in a given unit. (6) Assays on organisms (bacteria) to determine their reactions to an antibiotic or insecticide. This is called called bioassay. Organic materials are assayed by solvent extraction and chemical separation