A number of industrial process fluids require maintenance of optimum solids content to produce uniform coatings. The manufacture of integrated circuits and printed circuit
boards in the electronic industry present a number of examples:
Photo resist coatings
Resins for fiberglass impregnation
Solder Flux for wave soldering
Application of conformal coatings
Similarly in industrial finishing the coating thickness of paint or other material is heavily dependent on maintaining optimum solids content.
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