Vario PYRO Cube

CNSOH isotope ratio analysis – all in one universal instrument


Enjoy highest precision and accuracy in OH and CNS isotope ratio analysis with the vario PYRO cube. This elemental analyzer for isotope ratio analysis (EA-IRMS) perfectly adapts to your analytical demands, as it can be operated in OH mode (standard configuration) or in CNS mode (optionally available), offering CNSOH isotope ratio analysis all in one instrument. It delivers reliable results with outstanding precision and accuracy for samples with weights up to 1 g. Use the vario PYRO cube in combination with one of our state-of-the-art IRMS systems for best results, paired with unmatched ease of operation and great durability.



Highlights of the vario PYRO cube

Excellent peak shapes and separation with simultaneous NCS isotope analysis

even for analysis of very low sulfur contents in high carbon samples

Precise oxygen isotope analysis

thanks to unrivalled baseline separation of CO and N2 during δ18O analysis

Matrix-independent results

thanks to high-temperature pyrolysis at 1,500 °C

High operating comfort

thanks to a high level of automation and low maintenance




Excellent peak shapes and separation thanks to Advanced Purge and Trap Technology

The vario PYRO cube elemental analyzer offers OH and CNS analysis with excellent peak shapes and full peak separation in just a few minutes. This is achieved thanks to our Advanced Purge and Trap (APT) technology for advanced gas separation and preconcentration, providing market-leading precision and accuracy in elemental analysis. The APT technology also accounts for unrivaled sulfur sensitivity, allowing the vario PYRO cube to reliably perform trace sulfur analysis. In addition, a large dynamic measurement range for the analysis of samples from the low microgram up to the gram range is due to the APT technology.

Precise oxygen isotope analysis thanks to full baseline separation

The precise analysis of δ18O in nitrogen-containing samples usually imposes challenges, since N2 isobarically interferes with CO2. To solve this problem, the vario PYRO cube uses a patented backflush system to remove any N2 interferences, resulting in complete baseline separation and superior CO peak focusing. As a result, reliable oxygen analysis is a given with the vario PYRO cube.

Matrix-independent results thanks to high-temperature pyrolysis

Oxygen isotope ratio analysis relies on the conversion of sample oxygen to carbon monoxide. To ensure a full conversion of sample oxygen to carbon monoxide, high furnace temperatures above 1,400 °C are required. The vario PYRO cube operates with high-temperature pyrolysis at temperatures of up to 1,500 °C with an extra-long furnace hot zone for guaranteed complete conversion and, as a result, matrix-independence.

High operating comfort through design

Equipped with a 120 (or optionally 240) position autosampler, which is reloadable at any time, vario PYRO cube is designed for unattended 24/7 analysis and high sample throughput. The separation of combustion and reduction tubes results in a longer lifetime of these tubes and fewer maintenance events, as does the big ash finger, ensuring highest system uptime. Whenever maintenance is necessary though, our user-friendly clamp connections ensure a tool-free experience, while the slide-out furnace guarantees easy accessibility and a comfortable working posture.

Future-proof thanks to 10 years warranty

Thanks to the outstanding robustness and longevity of our vario PYRO cube, we grant a 10-year warranty on the thermal conductivity detector. With our long-term oriented dedication to technical support, we provide spare parts for a minimum of 10 years. This results in outstanding low total cost of ownership, giving you confidence in return of investment.


Download: Flyer-vario-PYRO-cube-EN


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