Bruker S8 TIGER Wavelength Dispersive X-Ray Fluorescence Spectrometer

Overview

The Bruker S8 TIGER is a high-performance, floor-standing wavelength dispersive X-ray fluorescence (WDXRF) spectrometer engineered for precision elemental analysis across the full periodic table—from beryllium (Z = 4) to americium (Z = 95). Based on Bragg’s law of X-ray diffraction, the instrument employs sequential or simultaneous crystal diffraction to isolate characteristic fluorescent X-rays emitted from a sample irradiated by a high-intensity X-ray tube. Its second-generation architecture integrates Bruker’s proprietary HighSense™ technology—a holistic system-level innovation encompassing optimized optical path design, high-stability solid-state generator electronics, low-thermal-drift X-ray optics, advanced synthetic multilayer and single-crystal analyzers, and dynamic detector electronics. This enables exceptional sensitivity for light elements (e.g., B, C, N, O, F), robust quantification of major-to-trace constituents (ppm to 100 wt%), and long-term measurement stability under industrial and research laboratory conditions. Designed and manufactured in Germany, the S8 TIGER complies with DIN 54113 radiation safety standards and CE directives for electrical equipment, and is certified as a type-approved analytical instrument by German regulatory authorities.

Key Features

• HighSense™ optical path: Short anode–sample–detector geometry minimizes signal loss and maximizes peak intensity and signal-to-background ratio.
• Modular solid-state X-ray generator: Stability better than ±0.00005% over time; available in 1 kW (50 kV/50 mA), 3 kW (60 kV/150 mA), and 4.2 kW (60 kV/170 mA) configurations—fully integrated with internal water cooling, eliminating external chiller requirements.
• HighSense™ X-ray tube: Ceramic end-window tube rated up to 75 kV / 200 mA; dual-loop water cooling (anode + head) ensures thermal stability for volatile and low-melting-point samples; optional 28 µm Be window increases light-element intensity by up to 50%.
• XS-series analyzer crystals: Including XS-B (100% improved B sensitivity), XS-N (100% improved N sensitivity), XS-C (30% improved S/N), XS-55 (10%+ gain for O/F/Na/Mg), XS-CEM (moisture- and temperature-stable multilayer for Al/Si in cement/glass), XS-Ge-C (40% P sensitivity gain), and XS-PET-C (20% Al sensitivity gain).
• High-speed goniometer: Optical encoder-based positioning with angular accuracy < ±0.001° and repeatability < ±0.0001°; scan speed up to 1200°/min; no mechanical wear over extended operation.
• XRF² micro-area analysis: 300 µm spot size with optional 1.25 mm collimation; motorized stage with 0.1 mm step resolution; integrated HD camera for region-of-interest documentation and reproducible mapping.
• Vacuum barrier system: Programmable separation between sample chamber and spectrometer vacuum; reduces He/N₂ consumption by >70%; protects optics from liquid spillage or powder contamination.
• Direct sample loading: Eliminates rotating sample carousel; maintains fixed source–sample distance; enables faster evacuation/filling and zero-maintenance mechanical reliability.

Sample Compatibility & Compliance

The S8 TIGER accommodates solid blocks, pressed pellets, fused beads, loose powders, liquids, and thin films—supporting both vacuum and He-purged measurement environments. Its vacuum barrier and DuraBeryllium™ protective screens ensure safe, contamination-free analysis of hygroscopic, volatile, or dusty samples. The instrument meets ISO/IEC 17025 method validation requirements and supports GLP/GMP workflows through audit-trail-enabled software features including Daily-Check-Routine, drift correction logs, and user-access-level permissions. All hardware and firmware comply with EU Machinery Directive 2006/42/EC, Electromagnetic Compatibility Directive 2014/30/EU, and Radiation Protection Ordinance (StrlSchV) aligned with DIN 54113. Optional accessories enable ASTM E1621 (glass), ASTM C114 (cement), ISO 20884 (petroleum), and USP (pharmaceutical elemental impurities) compliant testing.

Software & Data Management

SPECTRAplus V4 is the native Windows 10–based analytical platform, offering full quantitative and qualitative analysis, automated peak identification, background subtraction, interference correction, and graphical intensity visualization. It implements Bruker’s variable theoretical α-coefficient matrix correction—performing fully integrated fundamental parameter (FP) calculations per sample—while retaining compatibility with empirical and fixed-theoretical α methods. QUANT EXPRESS™ provides true standardless analysis with <2-minute scan-to-result capability and ppm-level detection for unknown matrices. Diagnostic tools include S8 TOOLS (real-time subsystem monitoring, fault logging, state snapshot export) and WebeX remote support. Network deployment allows unlimited client access for curve development, report generation, and database management. All modules—including PETRO-QUANT, GEO-QUANT ADVANCED, CEMENT-QUANT, METAL-QUANT, and ML PLUS—are validated for domain-specific applications and support 21 CFR Part 11–compliant electronic signatures and audit trails.

Applications

The S8 TIGER delivers trace-to-major element quantification in diverse sectors: cement and building materials (CaO, SiO₂, Al₂O₃, Fe₂O₃); geological exploration and mining (Si, Al, Fe, Mg, K, Na, Ti, Mn, P, S, Cl, Cr, Ni, Cu, Zn, Pb, As, Sr, Y, Zr, Nb); metallurgy (Fe, Co, Ni, Cu, Al, Sn, Pb, Zn, rare earths); petrochemicals (S, V, Ni, Ca, Mg, Na, Cl); polymers and plastics (Cl, Br, Cd, Pb, Hg, Cr); environmental monitoring (heavy metals in soils/sediments); and advanced materials R&D (thin-film composition, multilayer thickness, oxidation state effects via peak shift correction). Its geometric correction algorithms accommodate non-saturated samples, while LOI estimation eliminates pre-ignition steps for high-volatility materials.

FAQ

What is the minimum detectable limit for boron using the S8 TIGER?
Boron (Be Kα) detection limits are typically ≤5 ppm in optimized fused-bead configurations with XS-B crystal and He atmosphere—dependent on matrix, counting time, and sample homogeneity.
Can the S8 TIGER analyze liquid samples without risk of contamination?
Yes—the vacuum barrier isolates the spectrometer chamber during liquid analysis, and the DuraBeryllium™ window and sealed optical path prevent condensation or aerosol ingress.
Is the instrument compatible with ISO/IEC 17025 accreditation requirements?
Yes—SPECTRAplus V4 includes calibration traceability, uncertainty estimation, daily performance verification, and full electronic audit trails required for accredited laboratories.
Does the system support automated multi-layer film analysis?
Yes—ML PLUS software implements full FP modeling for up to 15-layer stacks (16 elements per layer), supporting both emission and absorption modes with thickness and composition output.
How does the HighSense™ tube improve long-term stability for routine QC labs?
Dual-loop cooling, anti-deposition cathode shielding, and hermetic ceramic construction reduce thermal drift and intensity decay—enabling >2 years of uninterrupted operation between maintenance cycles.