Cellulose extraction thimbles,made from high-quality cellulose,.Glass microfiber thimbles are made from 100% borosilicate glass and are known for their high chemical resistance and thermal stability at high-temperature applications and when dealing with corrosive substances or solvents.Both types of thimbles play a crucial role in the extraction and filtration,each catering to different types of chemical and physical conditions to optimize the recovery and quality of extracted sample