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Cole-Parmer offers Seamless, high-purity filters for extraction and air monitoring. Thimble filters are used in soxhlet apparatus for dust sampling, and for extracting soluble components using organic solvents. Thimbles are made of cellulose, glass fiber, PTFE or silica fiber.
Cellulose Thimbles are suitable for extraction of organic compounds and dust sampling. Lipid content is <0.1% by weight; thickness is 1.5 mm.
Thimble filters are useful for a variety of analytic procedures:
No. 84 - Cellulose Thimbles: Suitable for Soxhlet type extractions or dust sampling. Lipid content <0.1% by weight.
No. 86R - Glass Fiber Thimbles: Made of strong borosilicate glass fibers, resistant to high temperatures 500 °C and most acids.
No. 88R, 88H - Silica Fiber Thimbles: Made of quartz fibers, resistant to temperatures up to 1000 °C. Tapered for easy stack sampler loading.
No. 89, 89S - PTFE and PTFE/Silica Fiber Thimbles: Durable, temperature-resistant thimble with minimal trace metals.
Analysis of fats, oils, grease, organics, pesticides in food and soil material, pollutants and additives in plastic/rubber materials.
Nominal Rating (μm)
Collection Efficiency (%, 0.3 μm DOP)
Borosilicate Glass Fiber
PTFE - Silica Fiber