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S2 POLAR – The EDXRF for the Petrochemical Industry

The S2 POLAR is the Energy-Dispersive X-ray Fluorescence (EDXRF) spectrometer for the petrochemical industry

The S2 POLAR masters all requirements for S analysis from diesel to crude oils. This also includes continuous process control of higher sulfur levels in refineries as well as norm-compliant Ultra-Low Sulfur (ULS) analysis of final products.

The S2 POLAR complies with the international S norms such as ASTM D7220, D4294, and ISO 13032.

With its capability to measure multiple elements simultaneously, including Cl for corrosion prevention and P against residue build-up, the S2 POLAR is well suited for the analytical demands of refineries in one single instrument.

The S2 POLAR is also well suited for the norm-compliant analysis of additives in lubricating oils according to ASTM D6481 and ASTM D7751 that includes the elements Mg, P, S, Cl, Ca, Zn, and Mo. The analysis of elements in edible oils (e.g. Mg, P, Ca) or palm oils.

S2 POLAR EDXRF spectrometer

Safe Liquid Sample Handling with SampleCare™

Highest instrument uptime is crucial for the operation. This is ensured with Bruker’s SampleCare technology. SampleCareTM prevents leakages of liquid samples and protects important system components. This guarantees maximum instrument availability.


S2 POLAR Application - Refineries

Norm-compliant sulfur analysis from Ultra-Low Sulfur (ULS) levels in diesel and gasoline up to high levels in crude oil according to international norms such as ASTM D7220, D4294 and ISO 13032.

With its multi-element capability the S2 POLAR is also well suited to measure Cl to minimize impact of corrosion, P against residue build-up, or to monitor catalyst elements in refinery processes.

More information on refineries


S2 POLAR Application - Oils

Multi-element analysis of additives in lubricating oils is according to ASTM D6481 and D7751 including Mg, P, S, Cl, Ca, Zn, and Mo. Furthermore the S2 POLAR is also well suited to analyze elements in edible oils (e.g. Mg, P, Ca) or palm oils.

More information on oils

S2 POLAR Refinery Analyzer


ApplicationsElemental analysis in refineries e.g. sulfur analysis of
  • gasoline, diesel
  • biodiesel
  • kerosene, jet fuel, heating oil
  • naphtha, residual oil to crude
Further elements on request (e. g. P, Cl, Fe, Ni, V)
All refinery applications on one unit
NormsASTM D7220-17: Sulfur in automotive, heating, and jet fuels from 3 ppm to 942 ppm
ASTM D4294-16: Sulfur in petroleum and petroleum products from 16 ppm to 5 %
Ready-to-analyze solutions* for ASTM D7220 and D4294 including blanks, set of standards, QC and DC samples
Fulfills ISO 13032, 20847, 8754, IP 336, 496, 532,
and JIS K 2541-4

Norm-compliant sulfur analysis, internationally accepted, including ultra-low sulfur (ULS) applications


Dedicated, optional pre-installed push button methods to fit for purpose

Detection Limit (LLD)0.7 ppm S at 300 s measurement timePrecise and accurate S measurements, including ultra-low sulfur (ULS). Enables thesh-hold relevant process control at all steps in refineries
Measurement Range3 ppm to 5 % S, combined in one calibration with automated line switch
Higher concentrations on request
One calibration with wide concentration range


S2 POLAR Oil Analyzer


ApplicationsElemental analysis of additives in oils and polymersElemental analysis optimized for petrochemical products
NormsASTM D6481-14: P, S, Ca, Zn,
ASTM D7751-16: Mg, P, S, Cl, Ca, Zn, Mo
Ready-to-analyze solutions* for ASTM D6481 and D7751 including blanks,
set of standards, QC and DC samples
Further elements and norms on request

Norm-compliant analysis, internationally accepted

Dedicated, optional pre-installed push button methods to fit for purpose


S2 POLAR Refinery & Oil Analyzer


Atmosphere Modes
Helium mode
Vacuum mode
Optimal light element analysis of liquids
Low cost of operation
Sample Preparation
Liquid cups, SampleCare cups, Prolene and Mylar® foils, pipettes, balanceAccessories ensure high throughput of liquid samples. Low-cost per sample due to standardized liquid cups
Further Options

Emergency Machine Off (EMO)
Uninterruptible Power Supply (UPS)
Sample rotation


Compliant with safety requirements
Enables removing of liquid samples
Enhanced precision for inhomogenous samples, such as polymer pucks
X-ray Tube
50 W, high-power X-ray tube, max. voltage 50 kV, with polarizing HighSense™ beam path

Optionally: 30 kV max.
Max. power for short measurement times and high sample throughput, beam path optimized for petrochemical materials
Simplify regulatory efforts (e.g. Austria, France, Italy, Taiwan)
DetectorHighSense™ ULS Silicon Drift DetectorHighest count rates for fast analysis, low LLD
TouchControl™Integrated 12.1‘‘ TFT touchscreen, multilingual user interface: English, German, French, Spanish, Portuguese, Italian, Russian, Chinese, JapaneseIslandMode™ without external PC
Intuitive and easy-to-use, in your own language
ConnectivityEthernet port RJ45, 3x USB ports for mouse, keyboard, and printer; HDMI/VGA ports for external display, remote access via TCP/IPIslandMode™ but not isolated, various options for printing and network data transfer, even fully remotely
Power Supply100-240 V, 50/60 Hz, max. 600 VAStandard wall plug
Dimensions; width x depth x height, weight46.6 x 74.5 x 37.0 cm, 55 kg
18.3’’ x 29.3’’ x 14.6’’, 121 lbs
Small and compact for installations with limited space, e.g. for on-site process control in refineries

DIN EN ISO 9001:2008, 2006/42/EC (CE-certified Machinery directive), 2014/35/EC (Electrical equipment), 2014/30/EC (Electromagnetic Compatibility),
German Type Approval and Vollschutz according to BfS RöV,
Fully radiation-protected system; radiation <1 μSv/h (H*), Compliant to ICRP, IAEA, EURATOM

* Optional packages
Mylar® is a trademark of DuPont Nemours Inc.
HighSense™, IslandMode™, SampleCare™, TouchControl™ are trademarks of Bruker AXS.

Available services include

  • Help desk support from highly-skilled troubleshooting professionals, to isolate and resolve hard- and software problems
  • Web-based remote instrument service for service diagnosis and applications support
  • Merged reality support with Help Lightning – a virtual engineer at your side (video)
  • Planned maintenance, according to your requirement
  • Customer on-site repair and maintenance service
  • Spare parts availability typically over night or within a few working days worldwide
  • Compliance services for installation qualification, operational qualification / performance verification
  • Site planning and relocation

Bruker Support

On our support website you will find:

  • Software Updates
    System software updates are available online to registered users.

  • Documentation
    Product manuals and installation guides are available online to registered users.
  • All