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Glass Funnel

A glass funnel is a laboratory tool, typically made from borosilicate glass, used to transfer liquids or fine-grained substances into containers with narrow openings, minimizing spills. It has a conical top and a narrow stem, available in sizes from ~20 mm to ~200 mm in diameter. Glass is favored for its chemical inertness and thermal resistance, ideal for handling acids, solvents, or hot liquids, unlike metal or plastic.Common types include:

• Standard Funnels: For general liquid or powder transfer.
• Filter Funnels: Used with filter paper for filtration (e.g., Büchner or Hirsch funnels).
• Separatory Funnels: For liquid-liquid extractions, separating immiscible liquids.
• Dropping Funnels: With a stopcock for controlled liquid release.
• Powder Funnels: Wide stems for transferring dry materials.

Applications:

• Chemistry labs for precise transfers or filtrations.
• Home use for decanting oils, wines, or essential oils.
• Industrial settings for handling chemicals.

Care: Rinse after use to prevent residue buildup; dry to avoid contamination. Borosilicate glass is durable but should be handled to avoid chipping.