Bruker Avance 700 Digital NMR Spectrometer

Overview

The Bruker Avance 700 Digital NMR Spectrometer is a high-field, solid-state nuclear magnetic resonance platform engineered for advanced structural and dynamic characterization of heterogeneous materials. Operating at a proton resonance frequency of 700 MHz (corresponding to a 16.4 T superconducting magnet), it delivers high spectral resolution and sensitivity essential for probing complex molecular environments in polymers, catalysts, pharmaceutical solids, battery materials, and inorganic frameworks. The system runs on a Linux-based console with the XWINNMR acquisition and processing environment—optimized for pulse sequence flexibility, real-time data evaluation, and robust automation workflows. Its digital architecture supports precise RF waveform generation, low-phase-noise excitation, and synchronized gradient control, enabling quantitative MAS (Magic Angle Spinning), CP (Cross-Polarization), and multi-dimensional correlation experiments under controlled temperature and field stability.

Key Features

• 700 MHz ¹H operating frequency with 16.4 T wide-bore superconducting magnet (40 mm bore, active shielding)
• Digital console with ultra-stable RF synthesis, 1 ns time resolution, and integrated gradient amplifiers
• Multi-probe configuration supporting diverse solid-state NMR methodologies:
• 2.5 mm H-F/X CP/MAS probe (176–283 MHz X-nucleus range; max. spinning speed: 35 kHz)
• 4 mm VTN CP/MAS H/X probe (71–176 MHz X-nucleus range; max. spinning speed: 15 kHz)
• 3.2 mm TriGamma™ triple-resonance H/X/Y MAS probe for heteronuclear correlation (e.g., ¹H–¹³C–¹⁵N)
• 4 mm triple-resonance probe optimized for ¹¹B/²⁹Si correlation and adjacent low-γ nuclei
• 5 mm broadband low-γ probe covering ³⁹K, ⁴³Ca, ⁶⁷Zn, ⁹¹Zr, ¹⁰⁷Ag, ²⁵Mg, and ^47/49Ti
• Integrated cryogenic sample cooling (VTU range: −120 °C to +150 °C) and variable-temperature control for kinetic and thermodynamic studies
• Pre-installed pulse sequences for standard and advanced experiments including DARR, RFDR, TEDOR, CP-MAS, MQMAS, and STMAS

Sample Compatibility & Compliance

The Avance 700 accommodates a broad spectrum of solid samples—from microcrystalline powders and amorphous glasses to paramagnetic metal–organic frameworks and hydrated biomaterials. All probes are certified to IEC 61000-6-3 (EMC) and IEC 61000-6-4 standards. The system complies with GLP and GMP documentation requirements when operated with Bruker TopSpin 4.x or later, supporting audit trails, electronic signatures, and 21 CFR Part 11–compliant data archiving via optional LabSolutions or third-party LIMS integration. Routine calibration follows ASTM E2822 and ISO 17025–aligned protocols for field homogeneity, RF power linearity, and MAS speed accuracy.

Software & Data Management

Data acquisition and processing are managed through Bruker’s TopSpin software suite (v4.2+), providing full scripting support (Python-based AU programs), batch processing, and automated phase/amplitude correction. Raw FIDs are stored in Bruker’s proprietary format (ser, fid) and exportable to JCAMP-DX, NMR-STAR, and MestReNova-compatible formats. The Linux workstation includes RAID-5 storage (≥2 TB), remote SSH access, and compatibility with Bruker’s CMC-se (Chemometric Calibration) and Dynamics Center modules for quantitative relaxation analysis. All firmware and software versions are fully documented and verified prior to shipment.

Applications

• Atomic-level structural elucidation of disordered pharmaceutical APIs and co-crystals
• Surface chemistry and active-site mapping in heterogeneous catalysts (e.g., zeolites, MOFs)
• Ion dynamics and local coordination environments in solid-state electrolytes (Li/Na-ion batteries)
• Conformational exchange and backbone mobility in membrane proteins and amyloid fibrils
• Quantitative speciation of multi-nuclear systems (e.g., ²⁷Al/²⁹Si/¹¹B in geopolymers and glasses)
• Paramagnetic shift analysis and relaxation dispersion in transition-metal complexes

FAQ

Is this instrument fully refurbished and performance-validated before delivery?
Yes. Each Avance 700 undergoes comprehensive hardware diagnostics, shimming validation, probe tuning verification, and benchmark pulse sequence testing (e.g., ¹H–¹³C CP-MAS on glycine). A full test report—including field homogeneity (≤10 Hz linewidth on ¹H), RF power calibration, and MAS stability—is provided with shipment.
What level of technical support is included during the warranty period?
The 6-month limited warranty covers parts and labor for console electronics, magnet cryogenics (excluding helium refills), and probe RF components. Remote diagnostics, TopSpin software updates, and application consultation are available via scheduled video sessions with certified NMR engineers.
Can this system be upgraded to support higher MAS speeds or new probe types?
Yes. The Avance 700 digital console is backward- and forward-compatible with Bruker’s latest MAS probe families, including 1.3 mm Ultrafast MAS and 0.7 mm micro-MAS systems. Mechanical and RF interface upgrades require site survey and engineering assessment prior to installation.
Are original manufacturer service records and maintenance logs available?
All instruments are supplied with complete service history, including magnet quench logs, probe repair reports, and previous annual maintenance certificates. Documentation is delivered digitally in PDF format upon order confirmation.