Visiprep TM Large Volume Sampler

Significance of the Topic

Large-volume solid phase extraction (SPE) is a cornerstone technique in analytical chemistry for isolating trace analytes from aqueous samples. By enabling direct extraction from large containers, it streamlines sample preparation workflows in environmental monitoring, pharmaceutical quality control, and food safety testing, improving throughput and reproducibility.

Objectives and Overview of the Article

This specification sheet describes the Visiprep™ Large Volume Sampler, focusing on two configurations (Visiprep and Visiprep+) designed to integrate with Supelco Visiprep SPE vacuum manifolds. The document aims to inform users about sample capacity, tube compatibility, and operational features to support high-throughput SPE.

Methodology and Instrumentation

The sampler operates by drawing aqueous samples through replaceable Teflon® tubing into conditioned SPE tubes under vacuum. Key procedural steps include:

• Feeding weighted Teflon tubing into sample containers to reach the bottom.
• Connecting tubing adaptors to SPE tubes mounted on a Visiprep vacuum manifold.
• Applying vacuum and adjusting flow control valves to regulate sample uptake.

Used Instrumentation

The following equipment and consumables are referenced:

• Visiprep Large Volume Sampler (Cat. No. 57275) for 3 mL and 6 mL SPE tubes.
• Visiprep+ Large Volume Sampler (Cat. No. 57272) for 12 mL, 20 mL, and 60 mL SPE tubes.
• Supelclean™ SPE tubes.
• Visiprep SPE Vacuum Manifolds (12-port and 24-port models).
• Color-coded Teflon tubing, stainless steel weights, and replacement fittings.

Main Results and Discussion

The specification highlights:

• High throughput: up to 12 samples in parallel with appropriate sampler count.
• Versatility: compatibility with multiple SPE tube volumes and manifold ports.
• Ease of use: color-coded fittings and flow control for precise sample delivery.
• Modularity: replaceable tubing, nuts, ferrules, and weights for maintenance.

Benefits and Practical Applications

By integrating these samplers, laboratories can:

• Enhance reproducibility and consistency across large sample sets.
• Reduce manual handling and risk of cross-contamination.
• Adapt quickly to different SPE tube formats and sample volumes.

Future Trends and Possibilities for Use

Future developments may include:

• Automation interfaces for robotic handling and LIMS integration.
• Extension to non-aqueous and mixed-matrix sampling.
• Enhanced materials for chemical resistance and single-use disposability.

Conclusion

The Visiprep Large Volume Sampler family offers a robust, scalable solution for high-throughput SPE workflows. Its adaptable design and straightforward operation support a wide range of analytical applications, improving efficiency and data quality.

References

No external literature references were provided in the original specification.