Colouring material used as a rough acid-base indicator

Let's find possible answers to "Colouring material used as a rough acid-base indicator" crossword clue. First of all, we will look for a few extra hints for this entry: Colouring material used as a rough acid-base indicator. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.