Melton Lynn A, Lipp C.W., Spradling R.W., Paulson K.A. DISMT - Determination of Mixing Time through Color Changes

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Chemical Engineering Communications, (2001)

The DISMT (Dual Indicator System for Mixing Time) mixing time/distance diagnostic encodes semi-quantitative visualization of liquid/liquid mixing processes in color changes. In DISMT, two liquids, one red and one blue, are mixed to produce a yellow liquid. Through appropriate choice of the acid-base indicators used, and the initial pH’s of the two solutions, the yellow liquid appears only in those regions where the mixing fraction is within a designated fractional deviation (say 5%) of the infinite time mixing fraction.

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