Related Clues:

• The acid test that'll make you see red!
• Chemical indicator
• Test paper too hot to handle? Problem arises
• Acid-alkali testing substance
• Having settled problem, turned over paper for chemistry test
• Animated by flipping problem dye encountered in testing
• Ignited Peru's map in revolution — one of its states is red
• An acid test, perhaps, for this paper?
• Acid-testing paper
• Paper that turns red in acids
• Acid test?
• Test paper in chemistry?
• Stimulant going wrong has knocked insect out -- substance used in lab
• Kind of paper changing political complexion in response to outside influence?
• Some call it music (take acid to it)