Known for their purity and consistent high quality. Widely used in Soxhlet extraction units, providing a safe, convenient and efficient method of solvent extraction of solids and semi-solids. Soxhlet extraction is a widely used technique for the analysis of fats or pesticides in foods and soil materials as well as in many other procedures that involve a solid-liquid extraction.- Extraction Thimble, Quartz Microfiber, 25mm x 90mm Tapered, 10/pk 14-21 Days