Optimize 18mm Headspace Vial Selection: Types, Materials, Design Tips

Understanding 18mm Headspace Vials: Types, Materials, and Design Considerations

Jun. 25th, 2024
 Learn about the different kinds of 18mm headspace vials. Learn about their material and design. Also, learn how to pick the right one for your lab.


In expository research facilities, headspace vials are fundamental for gas chromatography (GC) applications. Researchers use them to analyze tests that must be in their vaporous stage. The 18mm headspace vials are well known. They are especially flexible and work with various lids. This article gives a deep look at the types of 18mm headspace vials. It covers their material, design, and tips for picking the best vials for your needs.

Understanding 18mm headspace vials.

What are Headspace Vials?

Planners intend for headspace vials to hold tests for gas chromatography examinations. The headspace is the gas over the test in a fixed vial. It's analyzed for unstable and semi-volatile compounds. 

Importance of 18mm headspace vials

18mm headspace vials are common. They fit most headspace autosamplers. They balance sample volume and instrument fit.

Looking for a complete overview of headspace vials? Our in-depth guide covers everything you need to know - from key features and selection criteria to typical pricing and best usage practices for GC and HPLC: Comprehensive Guide to Headspace vials: Features, Selection, Price, and Usage

Types of 18mm Headspace Vials

Clear Glass Vials


 Clear glass allows for easy visual inspection of the sample.

Purity guards against sample contamination through its chemical inertness.


Ideal for routine analysis where visual inspection is necessary.

Amber glass vials


Light Protection: It protects light-sensitive samples from UV and visible light.
Durability: Similar chemical resistance as clear glass.


Suitable for samples that degrade upon exposure to light.

Crimp Top Vials


Sealing Integrity:
 Provides a tight seal, preventing sample loss and contamination.

Compatibility: It
 fits most headspace analyzers.


Used in applications requiring a hermetic seal to maintain its integrity.

Screw-top Vials


Ease of Use: Convenient to open and close, facilitating sample handling.

You can reseal it many times if necessary.


Suitable for routine laboratory work where ease of handling is important.

Rounded Bottom Vials


Optimal Sample Recovery:
 It allows for sample recovery by minimizing residual volume.

Even Heating:
 Provides uniform heating of the sample during analysis.


Ideal for applications requiring precise thermal control and sample recovery.

Flat Bottom Vials

Gives a steady arrangement on level surfaces, which lessens the hazard of spillage.

Congruent with a wide range of autosamplers.


Appropriate for general-purpose use in different expository applications.

Curious about selecting the proper cap for your headspace vials? This article has the details: Are you Choosing the Right Cap for your Headspace Vial?

Fabric contemplations for 18 millimeter headspace vials

Glass Fabric

Sort out the Borosilicate glass.

Chemical Resistance:

The sentence remains unchanged: Offers great resistance to acids, antacids, and solvents.

Warm Soundness:

Can withstand tall temperatures without compromising its keen sense.

Sort II Pop Lime Glass:


Less costly than borosilicate glass.

Reasonable for non-critical applications.

Perfect for applications where tall chemical resistance isn't fundamental.

Butyl Rubber Septa:

Cost-effective: An option for routine analyses.

Good Sealing:
 Offers adequate sealing for most applications.

Design Considerations for 18mm Headspace Vials

Volume Capacity

10mL Vials:

Suitable for smaller sample volumes, it reduces waste.

20mL Vials:

Ideal for larger sample volumes, it offers greater analytical flexibility.

Seal Integrity

Crimp Seals:

Provide a hermetic seal, ensuring sample integrity.

Screw Seals:

Offer convenience and ease of use, suitable for less volatile samples.

How to choose the right headspace bottle closure for you, please click on this article to learn more: Screw and Crimp Top Headspace Vial,Which One Do You Need?

Compatibility with Instruments

Autosampler Compatibility:

Make sure the vials work with the autosampler model that's in your lab.

Temperature Tolerance:

Consider the thermal requirements of your analysis when selecting vial material and design.

Choosing the Right 18mm Headspace Vials

Sample Requirements


Choose vials with sturdy crimped tops to trap volatile samples.

Light Sensitivity:

Use amber glass vials for light-sensitive samples.

Analytical Needs


Opt for rounded-bottom vials for precise sample recovery and minimal residual volume.

Routine Analysis:

Screw-top vials offer convenience and reusability for routine analyses.

Budget Considerations

Cost-Effective Options:

Type II soda-lime glass and butyl rubber septa are good for non-critical uses. They work when budget is a concern.

High-Performance Needs:

Use borosilicate glass and PTFE/silicone septa. Suggest them for precise and sensitive tests.

We have high quality 18mm screw headspace vials for sale, click the link to buy directly: 18mm Screw Headspace Vial


Choosing the right 18mm headspace vials is important. They ensure the precision and efficiency of your gas chromatography. By understanding the vial types, materials, and design, you can pick the best vials for your lab's needs. You may need vials for tall chemical resistance, light protection, or ease of use. Vials are available to suit each need.


What are the most sorts of 18mm headspace vials?

Most sorts include clear glass vials and golden glass vials. They also include crease-top vials. Also, screw-top, rounded-foot, and flat-foot vials.

Why are golden glass vials used?

Golden glass vials protect light-sensitive tests from UV and obvious light. This protects the judgment of the tests.

What is the advantage of crease-beat vials?

Please ensure that vials have a tight, airtight seal. This prevents test loss and contamination.

When should I screw-top vials?

Screw-top vials are perfect for research facility work. They are easy to use and reseal.