Photo of Alundum Extraction Thimbles

Alundum extraction thimbles are for all kinds of extractions, except strong alkalis. They remain constant in weight. Extracted residue can be removed by ignition. Alundum material will withstand temperatures up to 1450° C. The 70 x 25mm thimble (E1600-4) is used in ASTM D473 test for fuel oil sediment by extraction.

Photo of PTFE Boiling Stones
Ultra-pure, virgin PTFE chips promote gentle, efficient boiling and help prevent superheating, even of highly volatile liquids. Ideal for continuous extraction methods, such as EPA SW846. These chips are not affected by boiling acids, hydrocarbons, ketones, esters, alcohols or alkalies. They are easily cleaned and non-contaminating. They will not scratch or abrade glassware and leave no powdery residue.