A foreign agent or material either introduced as part of processing (such as buffers or salts added during chromatography) or intrinsic to the nature of bioprocessing (such as product variants and cellular debris).
An additional or extra component of a pure gas or gas mixture. Impurities are most commonly encountered in pure material used as the raw material source for a component of a gas mixture. An impurity may be removed by purification. Alternatively, the impurity may be measured and accounted for during blending, thereby preventing it from becoming a contaminant.
Impurity is the 5th studio album of British rock band New Model Army. It was released in 1990 and re-released in 2005 as a limited edition remastered 2-CD-set. It was produced by Pat Collier and the band themselves.