A GENTLER APPROACH CLEANING WITH FOAM

摘要

Not all dirt is alike. Particles from dust to organic debris range in size and composition. Yes, the particles can all be attacked with the same broad spray or brush. Or, a more selective approach-often a gentler one-can be taken. The approach is foam cleaning. Cleaning with foam is a corollary of separating with foam. Industrial processes have long used foam as a mechanism for separation, which is called froth flotation (and other names, such as foam separation).