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Sulfur and nitrogen analyzer trace SN cube
trace SN cube
Sulfur and nitrogen analyzer
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The very best in ppb analysis

Meet the most sensitive combustion analyzer for sulfur and nitrogen in diesel, gasoline, and related samples: the trace SN cube. This sulfur and nitrogen analyzer with its catalyst-supported combustion technology ensures complete decomposition of all kinds of samples without soot formation and delivers fast analysis results in just a few minutes. By incorporating two complete combustion and detection channels for sulfur and nitrogen, respectively, into one analyzer, the trace SN cube works as two analyzers in one box. This concept allows the specific optimization of the determination for each element. This ensures sulfur and nitrogen analysis with highest precision and accuracy. The analyzer combines highest analytical performance with speed, flexibility, and long-term stability in automated operation.

Highlights of the trace SN cube

The most sensitive sulfur and nitrogen determination

with detection limits of 6 ppb for sulfur and 15 ppb for nitrogen

Soot-free combustion

for reliable results and maintenance-friendly instrument operation

No cross sensitivities during sulfur determination

thanks to the unique N Excess module

Highest sample flexibility

Optionally available modules allow the analysis of solids, gases, liquefied petroleum gas (LPG), or chlorine

Features

The most sensitive S and N determination thanks to two-channel system

The trace SN cube has an integrated two-channel system with two independent furnaces and combustion tubes, which makes it possible to adjust all parameters (temperature, injection volume, injection speed, etc.) for optimal sulfur and nitrogen determination with highest precision and accuracy. Samples are injected directly into the combustion tubes by the integrated 50 or 56 (temperature controllable)-position autosampler. The highly sensitive UV fluorescence and chemiluminescence detectors guarantee utmost sensitivity with detection limits of 6 ppb for sulfur and 15 ppb for nitrogen. This ultra-trace detection power gives rise to uncompromised sulfur and nitrogen analysis even in samples of lowest concentrations, and the two analyzers in one box design results in significant cost and space savings compared to the purchase of two separate analyzers.

Soot-free combustion for reliable results and low maintenance

In high-temperature combustion of oil and petrochemical samples, a well-known problem is soot formation caused by incomplete combustion. This affects data quality and also results in higher maintenance efforts. The trace SN cube successfully avoids soot formation by performing a catalyst-supported combustion, using especially developed catalysts which drastically optimize the oxidation process. With this technique, almost any sample can be ignited without soot production at injection volumes up to 80 μl, ensuring reliable results in any kind of sample and keeping maintenance as low as possible.

No cross sensitivities during sulfur determination

No more cross sensitivities during sulfur determination: the known problem of interferences in UV fluorescence detection by NO (higher nitrogen concentrations simulate too high sulfur contents) in common analyzers is solved by the unique N Excess module incorporated into our trace SN cube. Here, SO2 is collected at an adsorption column and released after the decay of the signal caused by NO. This technique allows the precise determination of 0.1 mg/kg sulfur in the presence of more than 100 mg/kg nitrogen.

Highest sample flexibility

The trace SN offers outstanding sample flexibility. Apart from liquid injections with the integrated 50 (not temperature controllable) or 56 (temperature controllable)-position autosampler, the analyzer can be equipped with an optional gas, LPG, or solids module for highest versatility in your sample matrices. For the analysis of highly volatile samples we recommend the use of our temperature-controllable autosampler. Retrofitting is easily done within a few minutes.

Future-proof thanks to 10 years warranty

Thanks to the outstanding robustness and longevity of our trace SN cube, we grant a 10-year warranty on the high-temperature combustion furnace. 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.

Product details

The trace SN cube is optimized for the analysis of:

  • SN

  • S

  • N

  • Cl*

* optionally available

Sample volume

Injection volume free adjustable from 3-80 µl

Element concentration range 

Large measuring range:
S: up to 1,000 ppm, 6 ppb LOD
N: up to 1,000 ppm, 15 ppb LOD
Cl*: up to 500 ppm (2 μg), 1.5 ppm LOD

Precision 

< 2 % rel. for 10 ppm standard (S and N)

Analysis time 

~ 4-6 min per parameter, self-optimizing according to element content and sample weight. Depending on sample type, analysis mode, and configuration.

* optionally available

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.

Purge and trap technique
This option allows users to enable the determination of very low S concentrations, even when N levels are high.

Detector 

  • High sensitive UV-F and CL detector, linear over entire range
  • Electrochemical Detector* for chlorine

Sample introduction 

Flexible sample introduction:

  • Manually with a syringe
  • Integrated 50* positions autosampler (not temperature controllable) for liquids
  • Integrated 56* positions autosampler (temperature controllable) for liquids
  • Integrated 80* or 120* positions autosampler for solids

Maximum furnace temperature 

1,200 °C 

Instrument control 

Windows® based trace SN 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.*

Required gases 

Synthetic air, argon, oxygen for N
Synthetic air for S

Dimensions 

47 × 55 × 57 (W × D × H) without detectors, autosampler

* optionally available

Electronic balance

Balance and elemental analyzer form a system. We offer analytical balances from the leading manufacturers with our instruments. Please contact us for further information.

SN standards dissolved in toluene

We offer a variety of SN standards dissolved toluene with concentrations from 1 µg/ml up to 1,000 µg/ml.

Downloads

Product flyer
Flyer trace SN cube
Determination of low sulfur concentrations in mineral oil using the trace SN cube
Qualification of used cooking oil for recycling using the trace SN cube
Catalyst supported combustion for reliable trace element analysis
English
Unique high precision chlorine analysis for a large concentration range
Do you have any questions?
We are here for you.