Solids transfer is typically considered a problem reserved for the oral-solid dosage (OSD) community, where the powder is the main product bulk; however, it comes up with reasonable frequency in the biotechnology world as well. Applications range from adding salts to a sterile media tank, dry media preparation, pH adjustment after filtration processes, as well as addition of precipitation salts to a tank. This article will survey the basics of closed powder transfer for the biotech professional.

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