The trace SN cube from Elementar is an outstanding analyzer for the most sensitive determination of sulfur and nitrogen, combining the functionality of multiple instruments to deliver a unified, multipurpose solution.
Sulfur and nitrogen often need to be detected in very low concentrations when analyzing hydrocarbons such as gasoline, diesel or natural gas. The trace SN cube builds on the success of the vario trace SN liquid injection system by combining a tried-and-tested combustion technique with a newly-developed autosampler.
By incorporating two complete combustion and detection channels into one analyzer, sharing a single liquid automatic injector capable of making two separate injections, the trace SN cube is able to deliver ideal analytical conditions, while catalysts can be used for each analysis without any compromise.
This integrated design also results in significant cost and space savings compared to two separate analyzers, and simplifies operations with a unified approach to electronic control and processing. Moreover, the device adheres fully to ASTM D 5453, D 6667, D 4629 and DIN ISO 20846 standards, meaning users can always rely on safe and fully automated trace analysis with the trace SN cube.
The trace SN cube allows the analysis of S, N and SN analysis in organic liquids, with Cl analysis functionality optional in combination with the others. Compatibility with gaseous and solid samples is also optional.
Detection of S is performed using UV-fluorescence, while N analysis is supported by chemiluminescence detection.
Measuring method
The trace SN cube offers high-temperature combustion in the carrier gas at up to 1,150 °C, with direct injection of liquid samples into separate ports for N and S determination.
Two instruments in one
Two completely separate combustion and detection channels are included for S and N, offering ideal analytical conditions and catalysts for each analysis without any compromise. This delivers all of the benefits of two separate analyzers, without the additional cost or space requirements this would involve.
Efficient injection methods
The instrument offers a maximum injection volume of 20 µl for liquids or 20 ml for gas samples. Injection times are only a few seconds, offering complete and residue-free combustion results in especially sharp peaks.
Purge and trap technique
This option allows users to enable the determination of very low S concentrations, even when N levels are high.
Highly sensitive detection
The instrument’s CLD and UV-fluorescence detection methods adhere to ASTM standards and deliver accurate, reliable results.
Broad measuring range
S and N levels can be measured between a range of zero and 1,000 ppm. Detection limits are set at 6 ppb for S and 15 ppb for N.
Compliance with industry standards
The system operates according to verified standards including ASTM D 6920, ASTM D 4629, ASTM D5453, ASTM D6667, DIN ISO 51444, ASTM D6069 and DIN ISO 20846.
vario Liquid Sampler (VLS)
Automated liquid feeding with a 50-position autosampler or a temperature-controllable 56-position autosampler, offering programmable cleaning cycles. Both are refillable even during analysis runs.
Chlorine detection option
Detection of chlorine can be added on with a sensitive electrochemical detector set, including a combustion tube for optimized Cl recovery, a drying device and the detector itself.
LPG sampler
An LPG sampler is available for the injection of gaseous samples or liquified petroleum gas samples.
Solids analysis modules
Add-on modules are available for the analysis of solid samples, including a manual feeding option and an automated feeding system that includes an 80-position or 120-position carousel.
N-excess module
For the determination of low S concentrations at high N contents.
The basic setup contains the necessary resources to support the initial installation and approximately 1,000 analyses after that.
For ongoing support, Elementar offers:
