Iso Dual Inlet

Highest precision pure gas analyzer


Dual inlet technology is the most precise, accurate and sensitive technique for pure gas, carbonate and water analysis. Because of this, the iso DUAL INLET has a unique role in the paleoclimate applications where instrumental precision contributes directly to the precision of paleoclimate models. Whilst the world’s climate continues to behave erratically, we must try to understand what has happened throughout Earth’s history before we can attempt to predict what might happen in the future. To elucidate this complicated story, the iso DUAL INLET is a valuable tool for paleoclimatologists to build a detailed understanding of the past to better inform policy makers who might just be able to influence the future of our planet.


Highlights of the iso DUAL INLET


High sensitivity

enables the analysis of both large and small sample volumes, even small volume COsamples

High precision measurements

of carbonate and water samples, with the world’s highest precision in δ¹⁸O analysis of water samples

Small footprint

ideal for busy laboratories who value lab bench space

High operating comfort

thanks to a high level of automation and low maintenance




Analyze the smallest to the largest samples with ease

The iso DUAL INLET provides a high dynamic range for sample analysis which means you can analyze the smallest foraminifera sample to the largest without consideration. This is achieved by the complete, automatic software control of two stepper-motor driven high compression ratio bellows. In addition, the patented micro-volume automatic cold finger allows the analysis of very small samples. Hence, even small volume CO2 samples can be measured with the highest precision and accuracy.

High precision measurements 

iso DUAL INLET delivers the highest precision in DI-IRMS analysis. A finely balanced flow of the sample and reference gases into the isoprime precisION IRMS system ensures an identical treatment of both gases to avoid potential errors. Furthermore, the dual inlet analyzer features 14 ultra-low dead volume valves with bodies machined from a single block of high purity stainless steel to reduce dead volume as much as possible, and a dedicated turbomolecular pump for the changeover valve guarantees zero residual memory effects between switching. These technical features result in the world’s highest precision in δ¹⁸O analysis of water samples.

Small footprint saves valuable lab bench space 

Lab bench space is valuable. The iso DUAL INLET satisfies with its incredibly compact footprint with self-contained electronics and vacuum system making it significantly smaller than competitive systems.

High operating comfort thanks to a high level of automation and low maintenance 

By using the lyticOS® Software Suite, complete automation of iso DUAL INLET is possible for minimum instrument contact time. For example, lyticOS automatically handles sample gases expansion and chopping routines to bring the sample gas intensity into range without having to be pre-programmed to do so. The large capacity 100 ml reference gas bellows permit long automated runs without the need for refilling. Together with highly dependable and robust valve seats which are proven to last for millions of operations without maintenance, iso DUAL inlet offers highest system uptime.