Simport Plastic Sample Tubes Screw Caps

No, Simport Plastic Sample Tube Screw Caps are non-sterile.

Yes, these screw caps are constructed from durable, high-quality polypropylene.

This material is specifically chosen to ensure sample integrity and reliable performance in laboratory environments:

• Thermal Compatibility: The caps are made of polypropylene, which matches the material of the compatible Simport sample tubes. This parity ensures the coefficient of thermal expansion is consistent, minimizing the risk of the seal breaking during temperature fluctuations or thermal cycling.
• Secure Seal Support: The sturdy polypropylene body works in tandem with the specialized sealing mechanism (either a silicone washer or lip seal) to guarantee a positive, leakproof seal across various temperatures.

Yes, these high-performance screw caps are offered in two distinct configurations to ensure a positive, leakproof seal across all temperatures:

• Silicone Washer Seal: Utilizes a separate, robust silicone washer positioned between the cap and the tube for enhanced seal integrity.
• Integrated Lip Seal: Features a reliable lip seal molded directly into the cap structure for secure containment.

Crucially, both cap types are constructed from polypropylene, matching the material of the compatible sample tubes. This material consistency ensures identical thermal expansion coefficients, minimizing the risk of leaks during temperature changes or thermal cycling.

The Simport screw caps are supplied in bulk packaging, with 1000 caps included per case.

The leakproof seal is guaranteed across all temperature ranges due to a combination of material consistency and specialized sealing design:

• Dedicated Sealing Mechanism: A reliable, positive seal is achieved by an integrated mechanism—either a silicone washer or a lip seal (depending on the configuration selected)—positioned between the cap and the tube.
• Thermal Expansion Matching: Both the screw caps and the compatible sample tubes are constructed from polypropylene. This material parity ensures a consistent coefficient of thermal expansion, which prevents the seal from compromising during temperature fluctuations (e.g., cryopreservation).
• Rapid, Secure Closure: The caps utilize a super-fast thread design combined with a long skirt for better handling, allowing users to secure or remove the cap quickly and reliably with only a single rotation.

Yes, these caps are specifically engineered to provide a guaranteed leakproof seal, maintaining sample integrity even when temperatures fluctuate.

Key features ensuring reliable sealing include:

• Positive Sealing Mechanism: A high-integrity closure is created by either a specialized silicone washer or a lip seal (depending on the variant selected) positioned between the cap and the tube.
• Optimized Thermal Stability: Both the cap and the corresponding sample tubes are made from polypropylene. This material uniformity ensures identical coefficients of expansion, which is crucial for maintaining the seal’s integrity during thermal cycling.
• Efficient Closure: The long skirt and super-fast thread design allow you to securely seal or remove the cap with just a single rotation, enabling rapid and positive closure in high-throughput environments.

Yes, the screw caps utilize a super-fast thread design specifically for rapid operation in high-throughput settings. This efficient design allows you to securely seal or remove the cap with just a single rotation.

Additionally, the cap features a long skirt which improves handling and sealing grip.

The leakproof performance of these caps is guaranteed by combining high-quality materials with specialized sealing mechanisms:

• Positive Closure: The design utilizes a dedicated mechanism—either a silicone washer or a specific lip seal (depending on the chosen variant)—to ensure a positive, reliable closure between the cap and the tube.
• Thermal Compatibility: Both the cap and the corresponding tubes are constructed from polypropylene. This material parity ensures matching coefficients of thermal expansion, which is essential for maintaining seal integrity, even during temperature fluctuations.
• Rapid Operation: The cap features a long skirt and a super-fast thread design, enabling users to securely seal or remove the cap quickly with only a single rotation.