Optimized Sample Introduction Consumables for High-Sensitivity MRR
BrightSpec’s MRR products combined with Restek's industry-leading chemistry consumables provide simple solutions for challenging samples and analytes.


Purpose-Built for MRR Spectroscopy
SpectrAline™ cartridges empower chemists to perform trace-level analysis in pharma and fine chemical matrices, pharmaceutical excipient testing, food safety testing, and solvent impurity analysis.
Purpose-built for the spectraMRR and isoMRR platforms, SpectrAline cartridges redefine sample introduction for MRR, enhancing the capture, concentration, and controlled transfer of volatile compounds into the measurement region.
Our Family of SpectrAline Cartridges
Select from a range of SpectrAline cartridge chemistries tailored to different compounds, matrices, and analytical objectives.
Carbowax™
Optimized for the capture and concentration of polar compounds, including alcohols, ketones, aldehydes, and amines
Porapak™
Concentrates VOCs and other light organic compounds to improve sensitivity in MRR workflows.
Rtx-1™
A nonpolar phase that supports boiling-point-based separations for volatile organics, solvents, fragrances, and essential oils.
Stabilwax™
A crosslinked PEG phase engineered for demanding pharmaceutical and fine chemical analyses requiring robust column performance.
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Higher Sensitivity Where It Matters
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Expanded Matrix Compatibility
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Simplified Workflows
Quantitation and Molecular ID Simplified
MRR’s unique molecular specificity, plus SpectrAline cartridges, enable challenging analytes to be quantified in complex matrices — no derivatization or ambiguous results.
Learn more about our molecular rotational resonance technology.



Designed and qualified jointly by BrightSpec and Restek scientists, SpectrAline™ Cartridges combine BrightSpec’s deep expertise in MRR applications with Restek’s manufacturing excellence.
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