Bruker S2 PUMA Series 2 Wavelength Dispersive X-Ray Fluorescence Spectrometer

Overview

The Bruker S2 PUMA Series 2 is a high-performance, benchtop hybrid X-ray fluorescence (XRF) spectrometer engineered for industrial and quality control laboratories requiring robust elemental analysis with operational flexibility. Unlike conventional energy-dispersive XRF (EDXRF) systems, the S2 PUMA Series 2 integrates wavelength-dispersive (WDXRF) automation capabilities—specifically via its XY Autochanger and Automation variants—enabling true multi-sample throughput without sacrificing analytical fidelity. Its core measurement principle relies on primary X-ray excitation (up to 50 kV, 2 mA) followed by detection of characteristic fluorescent X-rays; elemental identification and quantification are achieved through energy-resolved spectral deconvolution using a HighSense™ silicon drift detector (SDD), optimized for both light elements (e.g., Na, Mg, Al, Si, P, S, Cl, K, Ca) and heavier metals up to uranium. The instrument operates in air, vacuum, or helium purge environments, supporting standardized methods compliant with ASTM E1621, ISO 21043, and IEC 62321 for RoHS, ELV, and material composition verification.

Key Features

• Hybrid architecture combining EDXRF speed with WDXRF-grade automation logic and sample handling scalability
• XY Autochanger with 20-position sample tray and liquid-sample recognition—enables dynamic reordering and mid-run tray replacement without interrupting analysis
• High-power 50 W X-ray tube with selectable voltage (30–50 kV) and current (up to 2 mA), delivering optimal excitation across the periodic table
• HighSense™ and HighSense™ LE SDD detectors featuring 8k-channel MCA electronics, >250,000 cps maximum count rate, and <125 eV Mn-Kα energy resolution at full width at half maximum (FWHM)
• SampleCare™ multi-layer protection system: DustShield™ polymer cap for detector head, optical filter for X-ray tube, and real-time liquid detection during vacuum operation
• Smart-UPS integrated uninterruptible power supply ensures safe sample ejection and controlled shutdown during power failure
• TouchControl™ capacitive touchscreen interface supporting glove-compatible operation and nine language options (English, German, French, Spanish, Italian, Portuguese, Russian, Japanese, Chinese)
• Island-mode functionality allows standalone daily operation without external PC or network dependency

Sample Compatibility & Compliance

The S2 PUMA Series 2 accommodates solid discs, pressed pellets, fused beads, powders, thin films, and liquids (with appropriate containment). Its mechanical sample handler includes automatic surface-height compensation and optional HD camera-based visual verification—capturing pre- and post-analysis images for traceability and anomaly investigation. The system supports ASTM D7359 (petroleum), ISO 18113 (cement), and USP / (pharmaceutical elemental impurities) workflows. Full compliance with FDA 21 CFR Part 11 is available via optional audit trail, electronic signature, and role-based access controls implemented through AXSCOM middleware. IQ/OQ documentation packages are provided at installation, ensuring alignment with GLP and GMP laboratory validation requirements.

Software & Data Management

SPECTRA.ELEMENTS software serves as the unified control and evaluation platform for the S2 PUMA Series 2. It features a tab-based UI with no floating windows, intuitive workflow navigation, and granular user permission levels (Operator, Supervisor, Administrator). Built-in QC tools include blank correction, duplicate analysis tracking, and reference material calibration monitoring. The Evaluation plugin enables retrospective spectrum reprocessing—including matrix correction, peak deconvolution, and limit-of-detection recalculation—without reacquisition. Post-processing modules support automated report generation (PDF/CSV/XLSX), scheduled data export, and bidirectional LIMS integration via ODBC, TCP/IP, or HL7 protocols. AXSCOM provides secure, protocol-agnostic communication with process control units and MES systems, enabling closed-loop feedback in continuous manufacturing environments.

Applications

This platform is routinely deployed in cement, metallurgy, polymers, electronics, mining, and pharmaceutical QA/QC labs. Typical use cases include: alloy grade verification (ASTM E1086); RoHS-compliant screening of Pb, Cd, Hg, Cr(VI), Br in plastics and PCBs; catalyst composition profiling in petrochemical refining; elemental mapping of geological samples; and trace-level heavy metal testing (As, Se, Cd, Pb) in consumer goods per CPSIA requirements. Its light-element configuration (HighSense™ LE) delivers reliable detection of fluorine in lithium-ion battery cathodes and sodium in glass formulations—critical for advanced materials R&D.

FAQ

Does the S2 PUMA Series 2 require liquid nitrogen or cryogenic cooling?

No—it uses Peltier-cooled HighSense™ SDD detectors, eliminating the need for LN₂ or mechanical coolers.
Can the instrument analyze samples under vacuum or helium atmosphere?

Yes—vacuum mode enhances light-element sensitivity (e.g., Na–Cl); helium purge is supported for ultra-light element analysis (F, O, N) when configured with optional accessories.
Is method transfer possible between different Bruker XRF platforms?

Yes—SPECTRA.ELEMENTS supports cross-platform method portability among S2 PUMA Series 2, S2 POLAR, and S6 JAGUAR instruments via standardized spectral libraries and calibration templates.
What validation documentation is included with the system?

Factory-installed IQ/OQ protocols conforming to ISO/IEC 17025 and ASTM E1621 are delivered; 21 CFR Part 11 readiness kits and PQ support are available as optional add-ons.
How does the liquid-sample recognition function operate?

During vacuum evacuation, the system monitors pressure rise rate and chamber humidity; anomalous profiles trigger immediate abort and alert—preventing detector contamination or tube damage.