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

Significance of the topic

The growing demand for faster, more diverse and reliable material analyses in industrial QC/QA and research laboratories requires instrumentation that combines broad spectral capability with operational simplicity. Multi-range FT-IR measurements (near-, mid- and far-IR) together with complementary techniques such as FT-Raman and NIR are increasingly needed for forensic work, failure analysis, counterfeit identification, polymer characterization and process troubleshooting. Automating the optical configuration and measurement sequence reduces operator skill dependency, minimizes risk to delicate optics, shortens instrument recovery times, and enables unattended, high-throughput workflows.

Objectives and overview of the study

This application note documents how the Thermo Scientific Nicolet iS50 FT-IR spectrometer improves laboratory productivity by automating multi-range and multi-technique experiments. Key goals demonstrated include rapid configuration across >20,000 cm-1 to 80 cm-1, integration of FT-Raman and NIR into a single macro-controlled workflow, reduction of hands-on time, elimination of manual beamsplitter swapping and purge recovery delays, and delivery of complete analysis reports through automated software routines.

Methodology

The workbench approach uses instrument-level automation (iS50 ABX Automated Beamsplitter Exchanger and module Touch Points) together with OMNIC software macros to sequence background collections, optics selection, detector switching and sampling across modules. Example workflows include:

• Full spectral workflows spanning far-IR (to 80 cm-1) through mid-IR and into NIR using built-in diamond ATR, automated beamsplitter exchange and NIR module.
• Combined multi-technique sequences where mid-/far-IR ATR, NIR and FT-Raman spectra are acquired within one macro run, enabling unattended operation.
• Sample cases: acetylferrocene (demonstrating far-IR fingerprint information) and a recyclable plastic component (multi-technique composite analysis).

Automation emphasizes queueing of background collections, minimizing environmental exposure and removing manual equilibration (purge) delays.

Instrumentation used

• Thermo Scientific Nicolet iS50 FT-IR spectrometer (compact bench footprint ≈63 cm).
• iS50 ABX Automated Beamsplitter Exchanger (one-button optics selection).
• iS50 ATR built-in wide-range diamond sampling station (mid- and far-IR capability).
• iS50 NIR module with integrating sphere or fiber optics; InGaAs detector option for NIR.
• iS50 Raman module (FT-Raman) with dedicated Raman detector and laser.
• Beamsplitters and sources: Polaris beamsplitter, KBr and other optics; detectors such as DLaTGS for far/mid-IR.
• Optional modules: iS50 GC-IR, TGA-IR interface and additional detectors as required.
• Software: OMNIC for instrument control and macros; OMNIC Specta library search and TQ Analyst for chemometrics.

Main results and discussion

• Marked reduction in total analysis time for a combined far-, mid- and near-IR workflow from ~30 min (manual) to ~6.5 min using the iS50 with built-in ATR and automated optics exchange. Hands-on time was reduced from many minutes to roughly 20 seconds.
• In a multi-technique scenario (mid/far-IR ATR + NIR + FT-Raman), conventional manual operation required ~50 minutes total with ~45 minutes hands-on; the iS50 automated macro completed the same multi-technique sequence in <12 minutes with ~2 minutes hands-on — a >70% reduction in analyst time.
• Automation removes manual beamsplitter changes and eliminates purge/recovery wait times, yielding instant readiness and consistent performance between users.
• Far-IR data can provide unique structural confirmation (example: acetylferrocene low-frequency triplet confirming metal-ligand environment) that complements mid-IR and NIR fingerprints.
• Integration with spectral libraries and chemometrics allows end-to-end workflows (sampling to result) often within seconds to minutes, enabling rapid decision-making for time-sensitive problems.

Benefits and practical applications

• Throughput: Automated multi-range/multi-technique workflows enable more samples per operator and unattended runs, freeing analysts for value-added work.
• Risk reduction: Eliminating frequent manual handling of beamsplitters and detectors reduces exposure of optics to dust, fingerprints and moisture and lowers maintenance risk and downtime.
• Lower skill barrier: Touch Point one-button operation and macro sequencing enable users with varied experience to run complex methods reproducibly.
• Versatility: A single platform supports diverse tasks — QC/QA, failure analysis, forensic identification, counterfeit detection, polymer/additive characterization, and process development.
• Compact footprint and modularity allow laboratories with limited bench space to expand analytical scope without multiple dedicated instruments.

Future trends and potential applications

• Tighter integration with informatics: direct linkage of automated FT-IR workflows to LIMS, cloud-based spectral libraries and automated reporting for streamlined sample-to-report pipelines.
• Advanced chemometrics and AI: embedding multivariate models for automated classification, quantitation and outlier detection within macro workflows to speed interpretation.
• Expanded hyphenation: broader adoption of GC-IR, TGA-IR and other interfaces in automated sequences for incorporated thermal or chromatographic separation data.
• Remote and distributed operation: enabling remote macro scheduling and monitoring, facilitating centralized analysis or support for decentralized sampling points.
• Broader spectral databases: growth of curated multi-technique libraries (IR, NIR, Raman) to improve identification confidence in complex mixtures and novel materials.

Conclusion

Automating optics selection and multi-module sequencing on a compact FT-IR platform significantly improves laboratory productivity, consistency and safety. The Nicolet iS50 spectrometer demonstrates that combining automated beamsplitter exchange, modular sampling stations and macro-driven software can reduce hands-on time by an order of magnitude, shorten overall experiment durations, and make multi-range and multi-technique analysis practical for routine industrial workflows. The result is faster, more reproducible analytical answers with lower operational risk and greater flexibility for a broad range of applications.

Reference

1. Relationship between vibrational wavenumber and reduced mass: the IR wavenumber ṽ is inversely related to the square root of the reduced mass μ; as μ increases, vibrational absorptions shift to lower wavenumbers (illustrative physical chemistry relationship).