The phrase "purification procedure" refers to a process or method that is used to cleanse or remove impurities from something, making it pure or clean. Full definition
After a careful purification procedure, the researchers isolated a previously unknown pigment, which they dubbed sclerocitrin. (scientificamerican.com)
The industrial advent of mechanically driven steel expellers and hexane extraction processes allowed for greater world - wide vegetable oil productivity, whereas new purification procedures permitted exploitation of nontraditionally consumed oils, such as cottonseed (43). (academic.oup.com)
TPE has made headway in veterinary medicine over the past few years as a state - of - the - art blood purification procedure, joining the ranks of hemodialysis and hemoperfusion. (vetmed.ucdavis.edu)