UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary

Glossary of Karst and Cave Terms

optical brighteners
Material contained in laundry detergents to make 'whites whiter' and used in environmental tracing studies. Common types are, Tinopal CBS-X, Tinopal 5BM GX, and Phorwite BBH Pure. Dye type: Stilbene. See also fluorescent dyes.