This collection features high-quality PTFE stoppers compatible with a range of volumetric flask sizes commonly used in laboratories. Each stopper is precisely manufactured to ensure a tight, leak-proof fit and outstanding chemical resistance, supporting safe and reliable operations with different chemicals and solutions.

• PTFE stoppers are available in several standard sizes: 10/19, 12/21, 14/23, 19/26, and 24/29, catering to different flask neck dimensions.
• The material construction offers exceptional durability, resisting chemical corrosion and allowing for reuse in rigorous laboratory conditions.
• Ideal for research, educational, and industrial laboratory settings requiring secure closure and compatibility with a wide variety of solvents and reagents.

Polypropylene (PP) stoppers are also available for volumetric flasks, supporting alternative material needs.