Metrohm NanoRam Product Line

Handheld Raman Spectroscopy for Raw Material Identification and Verification

Importance of the Topic

Handheld Raman analyzers support immediate and non-destructive verification of raw materials in pharmaceuticals, chemicals and food production, reducing the risk of mix-ups and ensuring supply chain integrity.

Objectives and Overview

This application note introduces the NanoRam product line of portable Raman instruments designed for rapid library building, method development and compliance-driven analysis. It compares two models operating at 785 nm and 1064 nm excitation and highlights their roles in customer training, SOP templates and ongoing support.

Used Instrumentation

The system encompasses two handheld Raman models:

• NanoRam (785 nm): 300 mW excitation, spectral range 176–2900 cm⁻¹, ~9 cm⁻¹ resolution, TE-cooled CCD detector.
• NanoRam-1064 (1064 nm): 420 mW excitation, spectral range 176–2500 cm⁻¹, ~11 cm⁻¹ resolution, TE-cooled InGaAs detector.

Standard and optional accessories facilitate various sampling formats (point-and-shoot, vial holders, immersion probes, adapters) and compliance with 21 CFR Part 11 and IP ratings.

Main Features and Discussion

Key attributes include:

• Adjustable laser power in 10% increments for optimized sample throughput.
• Library support including USP reference spectra and barcode scanning for streamlined identification.
• Operational modes offering qualitative match/no-match analysis and statistical pass/fail decisions with mixture analysis capability.
• Battery-powered portability enabling over 4–5 hours of field use.
• Robust housing with IP64/IP65 protection for harsh manufacturing environments.

These specifications demonstrate how each model addresses fluorescence interference and sensitivity requirements across diverse raw materials.

Benefits and Practical Applications

• Rapid non-destructive testing accelerates release of incoming goods and reduces laboratory bottlenecks.
• On-site verification limits sample transport and environmental exposure.
• Ease of use and method templates support user training and regulatory compliance.
• Custom libraries and annual performance validation services maintain long-term accuracy.
• Compact form factor and flexible accessories adapt to different container types and sample states.

Future Trends and Potential Applications

Advances in Raman probe miniaturization and machine learning-driven spectral analysis will further streamline raw material testing. Integration with manufacturing execution systems and cloud-based libraries promises real-time quality monitoring and enhanced traceability. Emerging Raman enhancements (SERS, spatially offset Raman) may expand capability to trace contaminants and low-concentration analytes.

Conclusion

The NanoRam and NanoRam-1064 handheld Raman systems offer robust, compliant solutions for immediate raw material identification, combining spectral performance, versatile sampling accessories and regulatory features to support quality control in pharmaceutical and industrial environments.