1. Dissolve 6.5g KOH (potassium hydroxide) in 1600mL water and add several drops of universal indicator. Place in 2000mL graduated cylinder.

* Found with the antacids in most grocery stores and drugstores. † Make red cabbage indicator: Shred 1-2 red cabbage leaves and freeze 1 hour in a zip-close plastic bag. Add 1/3 cup warm water, reseal ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

attains new extremes of mystery and obtuseness. Who were Universal Indicator? No-one’s saying, but it was a loose collective of early-’90s bedroom technoheadz from the Rephlex roster (Aphex seems a ...