Thermo Scientific Nicolet iS50 FT-IR Spectrometer: Improving Productivity through Compact Automation

Significance of the topic

The increasing diversity and throughput demands in industrial QC/QA and research laboratories require analytical platforms that deliver rapid, reliable results across multiple spectral regions with minimal operator intervention. Automating FT-IR workflows reduces operator-dependent errors, eliminates time-consuming manual reconfiguration (beamsplitter swaps, detector changes, purge equilibration), protects sensitive optics, and enables consistent multi-technique analyses critical for time-sensitive decisions such as failure analysis, counterfeit identification, forensic casework, and product development.

Objectives and overview of the study

This application note demonstrates how the Thermo Scientific Nicolet iS50 FT-IR spectrometer integrates automation and modular components to: streamline multi-range (near-, mid- and far-IR) and multi-technique (FT-Raman, NIR, ATR) workflows; minimize hands-on time and instrument recovery delays; and provide unattended operation that produces final reports via macro-driven sequences and integrated software tools.

Instrumentation used

• Thermo Scientific Nicolet iS50 FT-IR spectrometer (compact 63 cm bench footprint)
• iS50 ABX Automated Beamsplitter Exchanger (automated optics selection)
• Built-in diamond iS50 ATR sampling station
• iS50 NIR module (integrating sphere or fiber optics) with InGaAs detector option
• iS50 Raman sample compartment module with Raman laser and Raman detector
• Detectors: dedicated DLaTGS for mid/far-IR, InGaAs for NIR
• Beamsplitters: Polaris and KBr options, plus other dedicated optics for far-IR
• Optional modules: GC-IR, TGA-IR interface
• Software: OMNIC for acquisition and macros, OMNIC Specta spectral search library, TQ Analyst chemometrics

Methodology and key procedures

Automation centers on the ABX exchanger and Touch Point controls that select the correct source, beamsplitter, detector and sampling station for a chosen technique. Users define macro workflows in OMNIC to:

• collect backgrounds for required regions,
• automatically change optics where needed,
• acquire mid-IR, far-IR, NIR and Raman spectra in sequence, and
• run automated searches or chemometric analyses to produce final reports.

Automated workflows avoid opening the spectrometer and disrupting purge/dessication, remove the need for repeated manual handling of hygroscopic optics, and allow unattended operation with minimal hands-on time.

Main results and discussion

• Full spectral mid-IR to far-IR to NIR workflow: typical manual process required roughly 29.5–34.5 minutes (including sample prep, beamsplitter changes and purge recovery). Using the iS50 with built-in ATR and NIR module reduced total time to ~6.5 minutes and reduced hands-on time to approximately 20 seconds in the example workflow.
• Combined multi-technique workflow (mid/far-IR ATR, NIR, FT-Raman): manual operation took ~50 minutes with ~45 minutes hands-on time; the iS50 automated macro completed the same multi-technique analysis in under 12 minutes with only ~2 minutes hands-on — a >70% reduction in elapsed time and large savings in analyst time.
• Example analyte (acetylferrocene): automated mid- and far-IR spectra revealed far-IR low-frequency triplet features diagnostic of the iron-cyclopentadienyl sandwich structure, demonstrating the added value of fast access to far-IR data without lengthy optics swaps.
• Automation lowers error risk from user selection of components, eliminates wait times for purge re-equilibration, and reduces chances of contaminating or damaging optics through manual handling.

Benefits and practical applications

• Operational efficiency: large reductions in total and hands-on analysis time enable higher sample throughput and better use of analyst time.
• Risk reduction: automated optics handling protects sensitive components and removes user-dependent configuration errors.
• Flexible multi-technique capability: single-platform acquisition of NIR, mid-IR, far-IR and Raman spectra supports complex tasks such as polymer/additive analysis, organometallic characterization, counterfeit detection, forensic identification, failure analysis, and process troubleshooting.
• Improved accessibility: macros and Touch Point controls allow users of varying skill levels to run advanced multi-range experiments consistently.
• Integrated data workflow: OMNIC, OMNIC Specta and chemometrics tools provide rapid identification and reporting, often within seconds after acquisition finishes.

Future trends and potential applications

• Deeper integration with chemometrics and automated decision-making (AI/ML-assisted spectral classification and anomaly detection) to further reduce expert intervention.
• Expanded spectral libraries and multi-component search algorithms to speed identification in complex mixtures and recyclables sorting.
• Broader inline and at-line process monitoring using compact, automated FT-IR modules (GC-IR/TGA-IR coupling for hyphenated analysis).
• Improved detector technologies and optics to extend sensitivity in the far-IR and increase S/N for low-concentration species.
• Remote operation and cloud-based workflows for distributed laboratories and centralized data review.

Conclusion

The Nicolet iS50 FT-IR spectrometer demonstrates how compact automation and modular design can transform routine analytical workflows: enabling rapid multi-range and multi-technique analyses, minimizing manual operations that cause downtime and error, protecting optics, and substantially reducing hands-on time. For industrial laboratories facing higher throughput demands and reduced expert staffing, the iS50 offers a practical route to improve productivity, data consistency and analytical reach from near-IR through far-IR and Raman on a single platform.

References

1. Vibrational frequency dependence on reduced mass: as the reduced mass of vibrating atoms or groups increases, IR vibrational wavenumbers shift to lower values; this explains the diagnostic value of far-IR features for heavier-atom-containing materials.