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red indicator for the sodium hydroxide determinations.

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On the basis of experimental data for oxygen desorption from two Newtonian and two non-Newtonian fluids of various concentrations, a dimensionless correlation for kLa in sparged agitated vessels is proposed. In addition to ordinary liquid properties and operating parameters, the correlation includes the Deborah number, which is defined as the product of the characteristic material time and the agitator speed and represents the viscoelastic behavior of non-Newtonian fluids.