| Test |
| Type of test |
| Kind of test |
| Acidity paper |
| Acid indicator |
| Acid test paper |
| Chemistry paper |
| Acidity detector |
| Chem test paper? |
| Chem lab colorant |
| Acid test material |
| Acid-testing paper |
| Chemical indicator |
| Acid-base indicator |
| Blue coloring matter |
| Color-changing stuff |
| It turns red in acid |
| __ test: pH indicator |
| Kind of test or paper |
| Kind of paper or test |
| Acid or base indicator |
| Red/blue chemical test |
| Substance in acid tests |
| Word with test or paper |
| Chemist's benchmark test |
| Word before paper or test |
| Substance turned red by acids |
| Substance used in test for acidity |
| Material used as an acid-base indicator |
| Material from lichens used to test for acidity |