Plastics (polyester resins) & paints & varnishes (binders). Determination of partial acid value & total acid value Plastics & rubber technology, Plastics, Unsaturated hydrocarbons, Polyesters, Polymers, Thermosetting polymers, Thermoplastic polymers, Paints, Varnishes, Binding agents, Chemical analysis & testing, Determination of content, Acid number, KOH number, Acidimetry, Quality control, Approval testing, Research work