Cellulose thimbles are high-quality sample reservoirs for quality control, research, and analytical applications where solvent extraction of solids and semi-solids must be carried out. The use of a Soxhlet extractor provides a safe method of extraction with toxic and other noxious solvents. Ahlstrom-Munksjö high purity cellulose extraction thimbles are recommended for applications including food testing, different process analysis and in quality management of components used in pharmaceutical formulations.