There are several ways to produce gold particles, but most involve dissolving chloroauric acid, also called gold salts, in liquid and adding chemicals to precipitate gold atoms.
Concentration of the virus particles by precipitation Because viruses are proteinaceous, they can be precipitated by methods that will precipitate proteins.
通过沉淀将病毒物质浓缩。由于病毒是蛋白质性质的，它们能通过蛋白质沉淀法沉淀。
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Rapid precipitation - Quickly collect and precipitate the Tiny suspended particles which make water turbidity, easy to extract concentrated or by filter.