PTFE Boiling Stones

Use these PTFE chips to promote gentle, efficient boiling and help prevent overheating of highly volatile liquids. PTFE Boiling Stones are not affected by acids, hydrocarbons, ketones, esters, alcohols or alkalis. Ideal for continuous extraction methods Chemically inert, and not affected1 by boiling acids, hydrocarbons, ketones, esters, alcohols or alkalis Non contaminating, show no trace of acidity or alkalinity Will not scratch or abrade glassware Leave no powdery residue 16 oz. (450g) plastic bottles