Fibrous materials
Fibres, threads, fabrics, clothing and upholstery fragments.
Paint coatings
Coating fragments and deposits, including those relating to vehicles.
Microparticles
Particles on products and surfaces, and suspected traces of contact interaction.
Comparison samples
Samples of known provenance, obtained and preserved separately.
Limits
The feasibility of examination depends on the material's quantity and condition, methods and questions; identification of a particular person does not follow from particle similarity alone.