Unsurpassed performance and versatility in elemental analysis

which covers 1 µg elemental concentrations,  40 mg C, and 1.5 g inorganic samples

even for samples that are traditionally difficult to combust

Exceptional elemental concentration & sample size range

Even elemental concentrations in the µg range produce well-defined peak shapes thanks to our patented gas preconcentration technology as well as our highly sensitive detectors. The vario EL cube features three gas-specific adsorption columns. Each column traps and preconcentrates one gas (i.e., CO₂, SO₂, and H₂O), while N₂ travels directly to the detector. Gases are released from the columns only after the peak of the previous gas returns to baseline. This means that the vario EL cube dynamically adjusts to your specific sample and guarantees complete baseline separation of gases - even at extreme C:N and C:S elemental ratios of 12,000:1. In contrast to other micro elemental analyzers, the vario EL cube has unusually high upper elemental and sample size limits. It can analyze up to 20 mg of an organic substance such as liquid fuels and up to 1.5 g of inorganic samples such as soils - as long as the carbon content does not exceed 40 mg. Additionally, the vario EL cube can be upgraded for oxygen, chlorine, and total inorganic carbon (TIC) analysis.

Reliable results due to blank-free sample introduction and superior combustion

The vario EL cube guarantees a blank-free sample transfer thanks to our patented ball valve sample introduction, which is especially beneficial to trace nitrogen measurements. Furthermore, the jet-injection of oxygen aimed directly at the point of combustion and the high furnace temperatures of up to 1,200 °C ensure a complete conversion of the sample to measuring gas –  a prerequisite for highly precise, matrix-independent elemental analysis.

Outstanding hydrogen and sulfur measurement capabilities

To reliably deliver precise hydrogen and sulfur concentration measurements, the vario EL cube’s tubing is actively heated. This prevents the condensation of traces of water inside the system and thus the misquantification of hydrogen and sulfur. Furthermore, the vario EL cube can be outfitted with an infrared (IR) detector for trace sulfur analysis. In just a single analysis you can simultaneously collect CHN data with the thermal conductivity detector and sub-µg sulfur data with the IR detector.

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

The vario EL cube can be equipped with a large autosampler with up to 120 positions that is reloadable at any position and time, enabling unattended 24/7 operation with highest sample throughput. Features like a fully automated leak check, a big ash finger, and a long-term stable calibration reduce maintenance tasks and times. This results in highest possible system uptime. Whenever maintenance is necessary, our user-friendly clamp connections ensure a tool-free maintenance experience, while the slide-out furnace gives easy access to all important parts and guarantees a comfortable working posture.