Fibre reinforced plastics. Moulding compounds and prepregs. Determination of resin, reinforcement-fibre and mineral-filler content. Dissolution methods|Plastics, Reinforced materials, Fibres, Mineral fibres, Reinforcing materials, Impregnated materials, Filling, Chemical analysis and testing, Determination of content, Extraction methods of analysis, Solvent extraction methods, Dissolution, Resins (natural), Test specimens, Specimen preparation, Mathematical calculations, Moulding compounds