Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. emulsion

Anotations

Scope note:

Emulsion in which droplet size is very small, often 10 nanometers or less. Uses include the cleaning of paintings, used along with micellar solutions and gels as a minimally invasive tool for selective removal of degraded ploymers used in past restorations.