Modes
The vario EL cube is optimized for the analysis of:- CHNS
- CHN
- CNS
- CN
- O*
- Cl*
- TIC*
* optionally available
Analytical specifications
Weighing range
Large weighing range spanning from micro (<1 mg) to macro (1.5 g soil) sample weight and up to 20 mg of organic matter.
Precision
< 0.1 % absolute (homogeneous substance), depending on sample type, analysis mode, and configuration
Element concentration range
Largest dynamic range of element concentrations:
C: Up to 40 mg absolute or 0 - 100 %
H: Up to 3 mg absolute or 0 - 100 %
N: Up to 15 mg absolute or 0 - 100 %
S: Up to 6 mg absolute or 0 - 100 %
O*: Up to 6 mg absolute or 0 - 100 %
Cl*: Up to 1.2 mg absolute or 0 - 100 %
* optionally available
Analysis time
~ 3-4 min per element, self-optimizing according to element content and sample weight. Depending on sample type, analysis mode, and configuration.
Technical specifications
High-temperature combustion unit
Complete sample digestion at up to 1,200 °C (or 1,800 °C at the point of combustion when tin foil is used) with a ten-year furnace warranty. A jet injection of oxygen directly to the sample leads to the highest oxygen concentrations at the point of combustion, as well as low gas consumption. 100 % recovery is guaranteed even for samples, that are traditionally hard to combust.
Detector
- Thermal Conductivity Detector (TCD)
- Infrared (IR) Detector* for sulfur and oxygen
- Electrochemical Detector* for chlorine
Maximum furnace temperature
1,200 ° C (whereby 1,800 °C is briefly reached at the combustion point when using tin foil)
Required gases
Helium or argon and oxygen
Purge and trap chromatography
Separation of gaseous components on up to three gas-selective columns. These columns trap the gases until they are heated up. The release of a gas is only initiated, when the prior gas peak has reached baseline. This results in perfect peak separation without overlap, and automatic optimization of the analysis time.
Sample introduction
- Integrated 60*, 80, or 120* positions autosampler (for solids and liquids in capsules), reloadable during analysis
- Integrated 2 ml vial, 50 positions liquid autosampler with rinse and waste vial*, reloadable during analysis
Instrument control
Windows® based vario EL cube operating software with LIMS integration and auto sleep and wake-up function for automated and unattended overnight operation. 21 CFR Part 11 functionality available.*
Dimensions
48 x 55 x 57 cm (W x D x H)
* optionally available
Accessories
Electronic balance
Balance and elemental analyzer form a system. We offer analytical balances from the leading manufacturers with our instruments. Please ask us for further information.
Capsule sealing press
Tool for the exact dosing and gas-tight sealing of tin or silver capsules, for liquid and sensitive samples.
Sample former and pressing tools
For simplified sample preparation, we offer a manual tool for compressing samples in tin foil or cups, and a mechanical press for the preparation of pellets with paper wrapping.
Highest performance and versatility
The vario EL cube is designed for the simultaneous analysis of carbon, hydrogen, nitrogen and sulfur and offers additional options for the determination of oxygen, chlorine and total inorganic carbon (TIC).
High operating comfort thanks to a high level of automation and low-maintenance design
Thanks to its low-maintenance design, the vario EL cube is optimized for unattended 24/7 operation and maximum measurement readiness. Sample tray with up to 120 positions can be loaded at any time: 24/7 operation with highest sample throughput thus possible. Easy access to combustion and reduction tubes via a slide-out oven and leak-tight clamp connections.
High-temperature combustion unit. up to 1,200 °C
Maximum furnace temperature up to 1,200 ° C (whereby 1,800 °C is briefly reached at the combustion point when using tin foil). A jet injection of oxygen directly to the sample leads to the highest oxygen concentrations at the point of combustion, as well as low gas consumption.
Exceptional elemental concentration & sample size range
The vario EL cube dynamically adapts to specific samples and guarantees complete baseline separation of gases - even at extreme C:N and C:S element ratios of 12,000:1. High upper element and weighing limits: 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.
Audit-ready: Instrument qualification & 21 CFR Part 11 software option
- Quick and reliable IQ/OQ/vendor PQ executed by trained service engineers using only certified measuring devices.
- Easy-to-grasp qualification documents delivered in a binder, to which all appendices are added.
- All necessary reference materials are supplied.
- User-friendly 21 CFR Part 11 software option for guaranteed data integrity.
