Introduction

Open-hole bottle caps are commonly used with HPLC mobile phase reservoirs and solvent bottles to accommodate tubing, filters, sparging lines, or solvent delivery assemblies. A common question is whether these caps can tolerate elevated temperatures without deformation or loss of performance.

For many laboratory applications, the answer is yes.

Temperature Resistance

The open-hole mobile phase bottle caps are manufactured from polyethylene and can be heated to:  140 °C (284 °F)

This temperature capability makes them suitable for many laboratory workflows that may involve:

• Heated environments
• Cleaning procedures
• Drying operations
• General laboratory processing

Typical Applications

These caps are commonly used for:

• HPLC mobile phase reservoirs
• Solvent delivery systems
• Mobile phase filtration assemblies
• Degassing systems
• GL45 laboratory bottles
• Custom tubing and fluid-transfer setups

The open-hole design allows tubing and fittings to pass through the cap while maintaining a secure bottle closure.

Important Considerations

When heating bottle caps:

• Do not exceed the recommended temperature limit.
• Verify compatibility with all attached tubing and fittings.
• Allow components to cool before assembly when necessary.
• Follow laboratory safety procedures and equipment manufacturer recommendations.

The temperature rating applies to the cap material and does not necessarily indicate compatibility with all connected system components.

Ordering Information

View available cap configurations, specifications, and product images on the:  Mobile Phase Bottle Caps Product Page

Key Takeaways

• Open-hole mobile phase bottle caps are manufactured from polyethylene.
• The caps can be heated up to 140 °C (284 °F).
• They are suitable for many chromatography and laboratory fluid-handling applications.
• Always verify the temperature limitations of any attached tubing, filters, or accessories.
• These caps are commonly used with HPLC mobile phase reservoir systems.