Metrohm MIRA XTR DS Product manual

Significance of the topic

The ability to perform fast, nondestructive chemical identification in the field is increasingly important for first responders, security personnel and industrial quality control. Handheld Raman spectrometers such as the Metrohm MIRA XTR DS series enable on-site analysis of liquids and solids without sample preparation, reducing hazards and response time.

Objectives and study overview

This document presents the product description, safety measures, operational workflow and technical specifications of the MIRA XTR DS handheld Raman analyzer family. It aims to guide users through device setup, software integration and best practices to ensure reliable chemical identification under diverse field conditions.

Methodology and instrumental setup

The MIRA XTR DS instruments employ 785 nm laser excitation combined with Orbital Raster Scan (ORS™) collection optics to average over sample heterogeneity. Key hardware and software components include:

• Laser source: Class 3B, CW, up to 100 mW, nominal ocular hazard distances defined for each attachment.
• Detector: Raman range 400–2300 cm^-1, spectral resolution 8–10 cm^-1 FWHM.
• Attachments (Smart Tips): universal, right-angle, stand-off, autofocus stand-off, contact ball-probe, SERS adapter, vial/tablet holders, and various working-distance lenses.
• Software: MIRA Cal DS for Windows (configuration, library management), MIRA Cal M mobile app for Android (data review, sharing), optional HazMasterG3® for CBRNE reference integration.

Main results and discussion

Performance verification shows consistent calibration stability using the supplied ASTM 1840 reference standard. The ORS technique mitigates sample fluorescence through built-in XTR extraction modes (Every Scan, Automatic, Prompted, Never). Battery operation with standard AA lithium or NiMH cells provides over three hours of runtime, extendable to nine hours with an optional PowerPack. Data transfer is supported via USB mass-storage mode or Bluetooth® to mobile devices. Safety interlocks on vial/tablet holders enforce Class 1 operation, while open Smart Tips require laser safety eyewear.

Benefits and practical applications

Users benefit from:

• Smart Acquire routines that automatically optimize laser power and integration time.
• Library matching across enabled spectra with mixture analysis capability.
• Content-ID mode for non-invasive container analysis in glass or polymers.
• Rugged design (IP67, MIL-STD-810G) suitable for field deployment.

Typical applications include hazardous material identification, narcotics and explosives detection, and quality control in industrial processes.

Future trends and potential applications

Advances in portable Raman may include integration of machine-learning algorithms for improved spectral deconvolution, miniaturized cooling detectors for lower noise, cloud-based library updates, and seamless integration with unmanned systems for remote sensing in hazardous environments.

Conclusion

The Metrohm MIRA XTR DS series represents a versatile platform for rapid, non-destructive field spectroscopy. Its combination of ORS sampling, modular Smart Tips, robust software ecosystem and safety features delivers reliable chemical identification across diverse scenarios.

References

Metrohm Raman. MIRA XTR DS Product Manual, Firmware Version 8.0.3.40 or higher, Document 8.0926.8005EN (2021). Metrohm.com