Thermo Scientific TriPlus RSH Autosampler Integrated Sampling System

Significance of the Topic

Automated sampling and precise sample preparation are critical for obtaining reliable and repeatable gas chromatography (GC) results. The integration of advanced robotic handling in autosamplers enhances throughput, reduces human error, and supports complex workflows needed in modern analytical laboratories.

Objectives and Study Overview

This paper presents the Thermo Scientific TriPlus RSH autosampler, designed to extend automated injection capabilities beyond conventional liquid, headspace, and solid-phase microextraction (SPME) to include multi-step sample preparation cycles. Key goals include demonstrating improvements in precision, flexibility, unattended operation, and integration with a variety of GC and GC-MS platforms.

Methodology

The TriPlus RSH employs robotic handling and an Automatic Tool Change (ATC) feature, allowing up to six syringes to be exchanged in sequence for tasks such as dilutions, calibrations, derivatizations, and injections without manual intervention. It supports diverse sample introduction modes, including split/splitless, programmable temperature vaporization (PTV), cold on-column, headspace, and SPME. Parameters such as pull-up strokes, delays, wash cycles, incubation, shaking, and precise reagent or standard additions are fully programmable.

Used Instrumentation

• TriPlus RSH autosampler with ATC capability and large vial capacity (up to 972 × 2 mL vials plus 100 mL wash/waste bottles)
• Thermo Scientific TRACE 1300 and TRACE 1310 GC systems
• ISQ single quadrupole GC-MS
• ITQ series GC-ion trap MS
• TSQ 8000 and TSQ Quantum XLS triple quadrupole GC-MS/MS
• Optional cryogenic GC accessory for sample enrichment
• Dual-laser barcode reader for vial traceability

Main Findings and Discussion

The TriPlus RSH delivers exceptional repeatability, achieving relative standard deviations below 0.5 % even for micro-volume injections down to 5 µL. Its large vial capacity supports week-long unattended sequences and the ability to run multiple GC or GC-MS instruments from a single autosampler. The ATC system automates complex preparation workflows, eliminating manual pipetting steps and reducing error. Headspace and SPME modes benefit from precise fiber conditioning, agitation, and multiple headspace extraction options. Cryogenic enrichment further enhances trace-level volatile analysis.

Benefits and Practical Applications

• High precision and reproducibility across diverse sample types, including volatile, viscous, or unstable compounds
• End-to-end automation of dilutions, standard additions, derivatizations, and mixing routines
• Scalable throughput with unattended operation 24/7 and large tray capacity
• Seamless integration with major chromatography data systems (Chromeleon, Xcalibur, TraceFinder) and remote control options
• Sample traceability via barcode reading and temperature-controlled trays for sensitive analytes

Future Trends and Applications

Continued development may focus on enhanced miniaturization of sampling tools, integration of real-time feedback for adaptive workflows, and expansion of cryogenic enrichment techniques. Advances in software intelligence and machine learning could further optimize sequence setup and predictive maintenance, while broader adoption of remote and cloud-based control will drive lab efficiency.

Conclusion

The Thermo Scientific TriPlus RSH autosampler represents a significant advancement in GC and GC-MS sample handling by merging robotic precision with versatile workflows. Its innovations in tool exchange, high-capacity unattended operation, and multimode injection deliver reliable, high-throughput analyses suitable for demanding applications in environmental monitoring, food and flavor profiling, QA/QC, and research labs.