Automated Sample Changers

Significance of Automated Sample Changers

Automated sample changers streamline analytical workflows by reducing manual intervention, ensuring consistent sample handling, and enabling high-throughput measurements across a wide viscosity range. By maintaining reproducible conditions and minimizing cross-contamination, these devices enhance data quality and free analysts for more complex tasks.

Objectives and Overview of the Xsample Series

The primary aim of the presented documentation is to introduce Anton Paar’s Xsample series of automated sample changers. These units accommodate diverse sample viscosities (from low up to 36 000 mPa·s), perform integrated cleaning, heating, and filling operations, and support single- or multi-sample workflows. The series comprises seven models tailored to specific laboratory needs.

Methodology and Used Instrumentation

Each Xsample unit combines a dedicated pump type (peristaltic, piston, or syringe) with up to three cleaning solvents, a customizable magazine or syringe holder, and optional heating up to 95 °C. Key instruments and modules:

• Xsample 520: peristaltic filling, up to 96 positions, no intermediate cleaning.
• Xsample 530: piston filling, up to 71 positions, handling viscosities to 36 000 mPa·s.
• Xsample 631: heated magazine for up to 36 samples, 95 °C capability.
• Xsample 320: single‐sample peristaltic unit with chemical‐resistant flow path.
• Xsample 330: single‐sample peristaltic with automated cleaning and sample recovery.
• Xsample 340: syringe‐based single‐sample changer for various syringe sizes.
• Xsample 610: heated single‐sample unit for viscous or solid samples up to 95 °C.

Main Results and Discussion

Performance metrics across the series include sample viscosities from 1 to 36 000 mPa·s, throughputs of 8–30 samples per hour, and flexible sample volumes (2–50 mL). Heated models achieve rapid temperature equilibration without external water baths. Integrated inside/outside needle washing and up to three cleaning agents prevent cross-contamination. Optional barcode readers and AP Connect software enable paperless data flow and compliance.

Benefits and Practical Applications

Automated Xsample changers offer:

• Enhanced laboratory productivity by enabling unattended operation, including overnight runs.
• Improved reproducibility and data integrity through standardized cleaning and filling procedures.
• Broad compatibility with Anton Paar density meters, viscometers, and beverage analyzers.
• Adaptability to corrosive or high-viscosity samples via chemical-resistant components and heating options.

Future Trends and Opportunities

Future developments may focus on advanced remote operation, AI-driven scheduling of cleaning cycles, real-time process monitoring, and integration with laboratory information management systems. Expanding high-throughput capabilities and modular add-ons will further tailor solutions to emerging analytical challenges.

Conclusion

The Anton Paar Xsample series delivers versatile and reliable automation for sample handling across a spectrum of viscosities and chemistries. By combining flexible filling technologies, robust cleaning strategies, and heating options, these modules drive efficiency, data quality, and compliance in modern analytical laboratories.