LLG UltraClean Closure 20 mm Aluminium Headspace Cap, Clear Lacquered, Centre Hole, Silicone Transparent Blue/PTFE White, 45° Shore A, 3.0 mm

The LLG Labware UltraClean Closure, 20 mm Aluminium Headspace Cap, Clear Lacquered, Centre Hole, is designed for high-performance sealing in headspace and analytical applications where sample purity and low contamination levels are critical. This UltraClean closure combines a durable aluminium cap with a high-quality silicone/PTFE septum, making it suitable for sensitive workflows such as gas chromatography and headspace analysis. The centre hole design enables convenient syringe access while maintaining reliable sealing performance during repeated use.

Key Features:

• Brand: LLG Labware
• Designed for 20 mm headspace vial systems: Suitable for use with standard 20 mm headspace vials, supporting secure and consistent closure in analytical and GC applications.
• Aluminium cap with clear lacquered finish: Provides a robust and stable closure, with the lacquered surface offering additional protection and reliable handling performance.
• UltraClean closure for sensitive applications: Engineered to support low contamination levels, making it ideal for analytical workflows where sample purity is essential.
• Centre hole for direct septum access: Allows syringe-based injection or sampling without removing the cap, helping improve efficiency and reduce contamination risk.
• Silicone transparent blue/PTFE white septum: Combines the flexibility of silicone with the chemical resistance of PTFE, supporting reliable sealing and compatibility with a wide range of solvents.
• 45° Shore A hardness: Provides a softer septum for easier puncture while maintaining effective resealing performance during repeated injections.
• 3.0 mm septum thickness: Offers enhanced sealing performance and durability, particularly suited to headspace and GC applications.
• Suitable for GC and headspace analysis: Designed for applications requiring gas-tight sealing and consistent septum performance in analytical workflows.
• Helps minimise leakage and contamination: The closure system supports secure sample containment, helping reduce evaporation, contamination, and sample loss.

The LLG Labware UltraClean Closure is a dependable choice for laboratories that require high-quality, low-contamination vial closures for analytical and headspace applications. When you order through LabFriend, you gain access to trusted laboratory consumables, dependable sourcing, and support in selecting the right closure solutions for your workflow. Choose LabFriend for reliable vial closures that help maintain sample integrity, support accurate analysis, and improve laboratory efficiency.

Frequently Asked Questions

1. What type of vials is this closure designed for?
It is designed for use with standard 20 mm headspace vials.

2. What makes this an UltraClean closure?
It is designed to minimise contamination, making it suitable for sensitive analytical applications.

3. What is the benefit of the centre hole design?
The centre hole allows syringe access through the septum without removing the cap, improving efficiency and reducing contamination risk.

4. What materials are used in the septum?
The septum is made from silicone with a PTFE layer, providing flexibility and chemical resistance.

5. What applications is this product suitable for?
It is suitable for headspace analysis, gas chromatography, and other analytical workflows requiring secure and clean vial closure.