- B201: Sulfuric acid with pH <2.0
- B202: Hydrochloric acid with pH <2.0
- B203: Nitric acid with pH <2.0
- B204: Phosphoric acid with pH <2.0
- B205: Hydrofluoric acid with pH <2.0
- B206: Mixture of sulfuric and hydrochloric acid with pH <2.0
- B207: Other Inorganic acid with pH <2.0
- B208: Organic acid with pH <2.0
- B299: Other acid wastes other than B201 to B208 with pH <2.0
