thymol blue method

thymol blue method

[¦thī‚mōl ¦blü ¦meth·əd]
(fluid mechanics)
A flow-visualization method in which the pH indicator thymol blue is added to the liquid under study and made to change color by electrolysis near a wire inserted in the liquid.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.