A Test Tube Cork is a natural, lightweight stopper designed to securely seal test tubes, culture tubes, and glass vials during storage, incubation, or transport. Made from premium-quality natural cork, it provides an airtight yet breathable seal suitable for microbiology, fermentation, chemical experiments, and general laboratory applications.

Cork stoppers are especially preferred for applications requiring gentle ventilation, chemical compatibility, and long-term sample storage.

Key Features

• Made from natural cork — lightweight, biodegradable, and chemical-resistant

• Provides a tight yet breathable seal for test tubes

• Available in multiple sizes to fit various tube diameters

• Gentle on glassware — prevents cracking or pressure buildup

• Resistant to moisture, mild chemicals, and heat

• Ideal for microbiology, fermentation, sample storage, chemistry & teaching labs

• Easy to insert and remove without damaging the tube

Technical Specification Sheet — Test Tube Cork (General)

(Dimensions vary by size: No. 0, 1, 2, 3, etc.)