Metrohm Instant Raman Analyzers: Mira 

The Metrohm Instant Raman Analyzers Mira are the first commercially available dual-core mobile spectrometers with Orbital-Raster-Scan (ORS) technology.

The spectrometers come with comprehensive, validated spectral libraries for maximum usability and flexibility.

Due to the larger sample interrogation area of ORS, Mira systems are ideally suited for instant analysis of the most complex samples – be they solid or liquid. Two measuring modes are available: point-and-shoot for direct, noncontact analysis in the container or the integrated vial mode for secure sample insertion. Comprehensive spectral libraries facilitate convenient identification of unknown spectra.

Key features

  • Instant and intuitive – faster decisions, even when measuring complex samples
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  • Highest safety by using either integrated vial mode (laser class 1) or point-and-shoot option for translucent containers (laser class 3B) 
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  • Versatile – always ready to use anywhere as-is. 
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  • Non-destructive - ORS ensures no sample degradation
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  • Powerful – operates with conventional off-the-shelf AA batteries  
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Reproducible results due to moving beamer and bigger sampling area 

ORS illustration
When ORS is used, the laser beam is moving. This increases the aperture size resulting in a bigger spot size, i.e., a larger interrogation area. Even for heterogeneous samples, ORS achieves an outstanding resolution.

Wide range of applications, even for temperature-sensitive samples

Mira spectrometer: analyzing powders with one hand
The moving ORS can do with a decreased laser power density. By preventing heat buildup of the sample and reducing the risk of degradation or ignition, the scope of measurable samples is extended.

Maximum flexibility – "open-library" principle 

Mira Cal software screenshot library management

The comprehensive spectral libraries allow you not only to identify unknown Raman spectra but also to characterize a broad range of materials.

The library consists of more than 9000 spectra that have been fully validated at the National Institute of Advanced Industrial Science and Technology (AIST) in Japan. Administration of the library is effected by Mira Cal software.

Easy data management with Mira Cal software

Mira spectrometer connected to computer

Above all, with Mira Cal software you can conveniently store, manage, reprocess, and exchange data.

Within Mira Cal you update the firmware and activate/deactivate the library. Mira Cal is a highly adaptive software that, by integrating your measured spectra, allows continuous adaptation of libraries to your analytical needs.

Flexibility – point-and-shoot and integrated vial measuring modes 

Mira spectrometer with various sample types and point-and-shoot adapter
There are two measuring modes. For samples in their container, there is the point-and-shoot adapter for direct, noncontact analysis. Samples in small vials can be directly placed into the spectrometer.

Portable – for single-hand operation 

Mira: analyzing tablets in blister

Process control and on-site monitoring require portable and rugged analyzers.

Benefit from a maximum of technology on a minimum of space – in the usual Metrohm quality.


Increased productivity – when speed matters

Mira: analyzing a liquid through an amber bottle

Often in the field you have to take decisions within seconds: this requires immediate insight in sample composition and identification.

When using the ORS technique, complex and heterogeneous materials can be analyzed within the shortest time possible and with the highest precision.


Robust – designed for any environment

Mira spectormeter with equipment
Easy-to-hold, rugged aluminum housing designed for where and when quick analysis is required.

Performance – automatic baseline correction

Mira Cal screenshot
The automatic baseline correction facilitates easy interpretation and precise analysis results.

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