“Mir Photonics” LLC has developed an innovative universal optical multispectral laboratory — a comprehensive collection of specially selected optical spectral equipment designed to solve a wide variety of scientific, educational, and industrial problems. The laboratory concept, described in detail in this paper, also features a new technique for spectral analysis based on an inter-spectral chemometric approach.
The laboratory is focused on modern analytical research, including the online analysis using fiber optic cables and probes.
Optical spectral analysis holds a special place among physicochemical methods for studying substances and materials. This method is based on measuring the result of the interaction of electromagnetic radiation with a sample across a wide range of wavelengths, from hard ultraviolet to far infrared light. Optical analysis is often the optimal choice because it is:
A noticeable trend in optical spectroscopy is the increased use of fiber optic solutions. Fiber optic probes and cells can be built into reactors and production lines, enabling online analysis on site and providing results in near real time. Thanks to achievements in photonics, optics, and micromechanical engineering, the development of specialized analyzers, known as Optical Multisensor Systems (OMS), is actively underway.
The ability to purchase an entire spectral laboratory at once, rather than element by element, provides significant benefits.
Synergy of Spectral Methods
Different spectral methods provide information about the chemistry and morphology of the sample (concentrations, distribution, particle sizes), but this information can vary greatly. For complex, real-world samples — such as oil, milk, process media, or biological tissue — the information supplied by a single method is often insufficient due to the complexity of multicomponent mixtures or overlapping phenomena (absorption, scattering, fluorescence).
The multispectral optical analysis approach involves combining two or more spectral methods to achieve a synergistic effect, allowing for the solution of problems that individual methods cannot fully address. This synergy is based on combining heterogeneous information:
Examples of successful combinations include NIR spectroscopy with fluorescence spectroscopy for determining biomass content during yeast fermentation, and the combination of NIR and IR spectroscopy for determining tumor boundaries in medical diagnostics.
The integrated laboratory set is pre-designed and well-integrated, taking into account the mutual compatibility of instruments and software.
The multispectral laboratory is equipped with instruments covering a wide range of analytical needs, focusing on fiber optic interfaces and online measurements.
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