Date: 19-APRIL-2013 Last Updated: 8-SEPTEMBER-2026
Introduction
Limited-volume autosampler inserts are designed to provide accurate positioning and reliable sample access for small-volume analyses. In many insert configurations, a plastic spring is used to secure and center the insert within the autosampler vial. Because the spring is an integral component of the insert design, it is supplied only as part of a complete insert assembly and is not available as a separately purchasable item.
Why the Spring Is Part of the Complete Assembly
The spring and insert are engineered to function together as a single system. This design helps maintain:
- Proper insert alignment
- Consistent insert height
- Reliable vial centering
- Stable autosampler positioning
- Reproducible sample access
Factory assembly ensures that the insert performs as intended throughout routine laboratory use.
Importance of Proper Insert Positioning
Small-volume inserts are commonly used when:
- Sample quantities are limited
- Maximum sample recovery is required
- Trace-level analysis is being performed
- LC-MS sensitivity is important
Accurate insert positioning helps support:
- Consistent needle access
- Reliable sample aspiration
- Improved analytical reproducibility
- Reduced sampling variability
The spring contributes directly to maintaining these conditions.
Why Replacement Springs Are Not Sold Separately
Providing springs as standalone components could lead to:
- Improper installation
- Inconsistent insert positioning
- Variable compression force
- Reduced autosampler reliability
- Potential sample recovery issues
Because the performance of the insert depends on the combined insert-and-spring design, replacement springs are only available as part of a complete insert assembly.
Engineered for Reliable Performance
The spring system used with AQ™ and RSA™ inserts is designed to provide:
- Consistent compression
- Stable positioning
- Proper centering within the vial
- Reliable autosampler operation
Maintaining these design specifications helps support dependable analytical performance and minimizes the risk of user-induced variability.
Insert Assembly Illustration
Glass insert and integrated spring assembly showing the dimensions and positioning features designed to provide consistent autosampler performance.
Replacement Recommendations
If a spring becomes damaged, lost, or otherwise unusable, the recommended approach is to replace the entire insert assembly. This ensures continued:
- Mechanical integrity
- Dimensional accuracy
- Autosampler compatibility
- Sample handling performance
Product Information
Conclusion
Plastic springs used in AQ™ and RSA™ autosampler vial inserts are engineered as part of the complete insert assembly and are not offered as standalone replacement components. Supplying the spring and insert together helps ensure proper alignment, consistent positioning, reliable autosampler operation, and optimal sample recovery for low-volume analytical applications.
