Metrohm NanoRam Product Line

Importance of the Topic

Handheld Raman spectroscopy plays a critical role in verifying raw materials across pharmaceutical, chemical and food industries. Rapid, non-destructive analysis directly at the point of use improves supply-chain integrity, reduces downtime and ensures compliance with regulatory standards such as 21 CFR Part 11.

Objectives and Study Overview

This application note presents the technical specifications and performance features of the NanoRam® product line, including two models optimized for different sample types and fluorescence backgrounds. It aims to highlight how laser wavelength, detector choice and accessory options support diverse identification tasks.

Methodology and Instrumentation

The NanoRam® series comprises two handheld Raman analyzers:

• Model BWS456-785: 785 nm laser (300 mW max, adjustable in 10% increments), spectral range 176–2900 cm⁻¹ with ~9 cm⁻¹ resolution, TE-cooled linear CCD array detector.
• Model BWS456-1064: 1064 nm laser (420 mW ±30 mW, adjustable in 10% increments), spectral range 176–2500 cm⁻¹ with ~11 cm⁻¹ resolution, TE-cooled InGaAs array detector for reduced fluorescence.

Standard accessories include point-and-shoot adapters, vial holders, immersion probes and validation caps. Optional items cover large-spot adaptors, camera modules and extended battery packs enabling 4–5 hours of continuous operation. A built-in barcode reader and chemical libraries—including USP standards—facilitate rapid sample matching.

Key Results and Discussion

Both models deliver reliable pass/fail identification and match/no-match investigation modes based on statistical p-value algorithms. The 785 nm system offers higher spectral resolution at shorter wavelengths, while the 1064 nm version excels in minimizing fluorescence for colored or highly scattering samples. Compliance with IP64/IP65 ratings and 21 CFR Part 11 ensures suitability for regulated environments. Battery operation and ergonomic design support field deployment and in-plant mobility.

Benefits and Practical Applications

• On-site verification of incoming raw materials to prevent counterfeit or substandard ingredients.
• Streamlined QA/QC workflows by eliminating sample transport to central labs.
• Regulatory compliance through secure data logging, user management and audit trails.
• Flexible sampling modes for powders, liquids and mixtures without sample preparation.

Future Trends and Applications

Advancements in detector technology, miniaturization and machine learning algorithms are poised to enhance identification accuracy and library matching speed. Integration with digital quality management systems will allow real-time reporting and predictive maintenance. Expanding spectral libraries and chemometric tools will support more complex mixture analyses and extend applications into environmental monitoring and food authenticity testing.

Conclusion

The NanoRam® product line offers robust, compliant and user-friendly handheld Raman solutions tailored for raw material identification and verification. Its dual-wavelength options, modular accessories and advanced software modes address a wide range of industrial needs, enabling faster decision-making and stronger quality assurance.

Reference

Technical data sheet: NanoRam® Product Line, B&W Tek, LLC, Doc-Rev: 400000375-A (02/04/2021)