The Ricca Chemical universal indicator is composed of 64.3% isopropyl alcohol, 35.35% water, 0.12% thymol blue, sodium salt, 0.07% methyl yellow, 0.05% methyl red and 0.02% phenolphthalein. It is suitable for use in pH detection of chemical solutions or substances. It can be stored at a temperature of 15 to 30 degree C.