EntityQ903137· pop 20· linked from 17 articlesuniversal indicatorSign in to savetype of pH indicatorConnectionspH indicatorEntitywaterEntitycolorEntityInternational Standard Book NumberEntityacidEntityprotonEntitypHEntitydigital object identifierEntitysolutionEntitysodium hydroxideEntityalkaliEntityQ364EntitybibcodeEntitylitmusEntityphenolphthaleinaEntitypropyl alcoholEntitymethyl orangeEntitybromthymol blueEntitySodium hydrogen sulfiteEntitythymol blueEntityCategoriesPH indicators