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Passive or "diffusive" air sampling depends on meteorological conditions such as wind to diffuse air pollutants to a sorbent medium. Passive samplers, such as diffusion tubes, have the advantage of typically being small, quiet, and easy to deploy, and they are particularly useful in air quality studies that determine key areas for future continuous monitoring.
BUMDes-run convenience store in Kebumen Regency. A village-owned enterprise (Indonesian: Badan Usaha Milik Desa), often shortened to BUMDes or BUM Desa, is a type of company that is managed and established by an Indonesian village. These companies span a wide array of industries, from agriculture and mining to tourism and retail.
A sampling valve is a type of valve used in process industries that allows taking a representative portion of a fluid (gases, liquids, fluidized, solids, or slurries) to test (e.g. by physical measurements, chemical analysis, microbiological examination), typically for the purposes of identification, quality control, or regulatory assessment.
Aseptic sampling is the process of aseptically withdrawing materials used in biopharmaceutical processes for analysis so as not contaminate or alter the sample or the source of the sample. [1] Aseptic samples are drawn throughout the entire biopharmaceutical process ( cell culture /fermentation, buffer & media prep, purification , final fill ...