congo red

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  • noun

Words related to congo red

a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)

References in periodicals archive ?
The thermal stability time determined from congo red test.
The resultant mixtures are put into a test tube with congo red test paper located at 2 cm above the sample to avoid the influence of high temperature.
085 g (Table 3) is measured via congo red test as described above.
For the Congo red test, a portion of material from each sample group was weighed, and enough water was added to achieve a concentration of 6.