Related Clues:
- Soapmaker's substances, perhaps
- Potassium hydroxide solutions
- Gastric juices, e.g.
- Durer supplies
- Litmus test materials
- Old soap ingredients
- Bases' counterparts
- Heavy-duty cleansers
- Lab collections
- Lab hazards
- Low-pH compounds
- Hydrochloric and others
- Acetic and nitric
- Chem-lab liquids
- Corrosive fluids