High-purity glass microfiber thimbles manufactured from 100 % pure borosilicate glass are available for specialised applications. The thimbles are completely free of binders or additives and can be used at temperatures up to 500 °C or when using solvents incompatible with cellulose thimbles. These thimbles are also used in pollution monitoring techniques (0.8 µm nominal particle retention). - Designed to fit most commercially available Soxhlet extractors. - No binders are added. Applications: Smoke stack gas monitoring, Soxhlet extraction, analysing pesticide residues, determining oil / fat content of foods (e. g. French fries), analysis of oil and grease in solid wastes. High-purity glass microfiber thimbles manufactured from 100 % pure borosilicate glass are available for specialised applications. The thimbles are completely free of binders or additives and can be used at temperatures up to 500 °C or when using solvents incompatible with cellulose thimbles. These thimbles are also used in pollution monitoring techniques (0.8 µm nominal particle retention). - Designed to fit most commercially available Soxhlet extractors. - No binders are added. Applications: Smoke stack gas monitoring, Soxhlet extraction, analysing pesticide residues, determining oil / fat content of foods (e. g. French fries), analysis of oil and grease in solid wastes.