Boiling stones are unevenly-shaped substances that are added to liquids to stabilize. Chemically-inert, anti-bumping granules come in a variety of particle sizes. With a porous nature, boiling chips can successfully trap air in cavities to form solvent vapor bubbles continuously as long as the liquid remains at boiling point. Made of materials like silicon carbide or calcium carbonate, these chips provide nucleation sites to ensure smooth boiling and prevent bumping. Without the stones, liquids have a tendency to superheat then violently boil over. Boiling stones prevent intense reagent splattering, equipment damage, or the experiment being negatively impacted.

Boiling Stones

Supplier: Thermo Fisher Scientific

For preparative work.

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Boiling stones , BOLA

Supplier: Bohlender

Boiling stones, made of PTFE, white, prevent chemical splashes and production of big bubbles when boiling the medium. Grain size: 4 mm. Packed in resealable bag. FDA conformity.

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VWR® Boiling Stones ('Anti-Bumping'), Granules

Supplier: VWR Chemicals

Granules of fused alumina, to reduce 'bumping' in boiling liquids.

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Boiling Stones for Analytical Work

Supplier: Thermo Fisher Scientific

For analytical work.

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Fluka™ Boiling stones ('Anti-Bumping'), granules 1-3 mm

Supplier: Honeywell Chemicals

Boiling stones, 1-3 mm, Plastic Bottle,

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Boiling stones

Supplier: Saint Gobain Life Sciences

Ultra-pure, virgin PTFE boiling stones promote gentle, efficient boiling and help prevent overheating, even of highly volatile liquids. Ideal for continous extraction methods. Stones minimise 'bumping' during reflux and distillation.