High purity, seamless thimble filters offered in 5 materials. Applications include analysis of fats, oils, grease, pesticides, pollutants, organics and additives in plastics and rubbers. Cellulose Fiber is made from alpha cotton cellulose. These thimbles are binder-free and suitable for Soxlet extractions of organic components and dust sampling. Lipid content: <0.1% wt.