Whatman 10350247 Grade 603 Standard Cellulose Extraction Thimble, 33 × 130 mm, thickness 1.5 mm, 25 per pack

Thimbles of type 63 are made from high-quality cellulose and 63G thimbles are made from borosilicate glass fibers with an inorganic binder. For all automated extraction apparatuses in common use, Whatman offers thimbles whose dimensions are matched exactly to those of the thimble holders to ensure optimal fit.