Possible Clues:

• Indicator of acidity or political support
• Sole deciding issue
• Chemistry exam?
• Record covers time and something essential from start of extradition - it's indicative of the ultimate trial
• *It may show acidity
• Chemical trial
• Get examination paper for this assessment?
• After having fired, has to set off indicator
• Chemical indicator lest it fail must be included
• Part of New York must arrange evaluation when the Reds go blue