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Who described the static method of gassing-out?

(a) Cooper

(b) Humphrey

(c) Wise

(d) Taguchi

The question was asked in examination.

The origin of the question is Aeration and Agitation topic in section Aeration and Agitation of Fermentation Technology

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The correct option is (c) Wise

For explanation: Wise in 1951 was the first to describe the static method of gassing-out. The technique was used in the measurement of KLa values where the concentration of oxygen is lowered by gassing out with the nitrogen gas.

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