Bruker AVANCE NEO 400 MHz Nuclear Magnetic Resonance Spectrometer with Ascend Evo Magnet

Overview

The Bruker AVANCE NEO 400 MHz Nuclear Magnetic Resonance (NMR) Spectrometer equipped with the Ascend Evo superconducting magnet represents a benchmark in high-field solution- and solid-state NMR instrumentation for academic, pharmaceutical, and industrial research laboratories. Engineered around pulsed Fourier transform (PFT) methodology, this system leverages quantum mechanical interactions between nuclear spins and precisely controlled radiofrequency (RF) pulses within a stable, homogeneous static magnetic field (B₀). The 400 MHz operating frequency corresponds to the resonance condition of ¹H nuclei in a 9.4 Tesla magnetic field—enabling high spectral resolution, improved signal-to-noise ratio (SNR), and enhanced sensitivity for structural elucidation, conformational analysis, dynamics studies, and quantitative NMR (qNMR). The core magnet platform—Ascend Evo—is designed and manufactured in-house by Bruker in Switzerland, integrating proprietary coil winding, cryogenic architecture, and active shielding to deliver exceptional field homogeneity (< 0.1 ppm over 10 mm DSV), long-term temporal stability (< 0.1 Hz/h drift), and robust immunity to external magnetic perturbations.

Key Features

• Ascend Evo superconducting magnet with optimized NbTi coil geometry and advanced cryostat design for ultra-low helium boil-off rate (typically < 0.8 L/day without recondensation)
• Integrated external disturbance suppression (EDS) system mitigating low-frequency magnetic noise from elevators, HVAC, or power infrastructure
• Active shielding minimizing stray field footprint—enabling installation in standard laboratory spaces without dedicated magnetic shielding rooms
• Compact physical footprint due to high-efficiency magnet architecture and integrated cryogen management
• Full compatibility with Bruker’s TopSpin 4.x software suite, including automated shimming (GradientShim), pulse sequence library (PulsePrograms), and real-time data processing
• Support for broadband multinuclear observation (¹H, ¹³C, ¹⁵N, ¹⁹F, ³¹P, etc.) via cryoprobes and room-temperature probes with QCI, TCI, and TXI configurations
• Compliance with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-4 (industrial immunity) standards

Sample Compatibility & Compliance

The AVANCE NEO 400 MHz platform supports both solution-state and solid-state NMR experiments through interchangeable probeheads and sample handling modules. Standard 5 mm OD tubes are accommodated for routine liquid-phase analysis; optional 3 mm, 1.7 mm, or 10 mm rotors enable high-sensitivity or high-power MAS applications. All probe designs comply with ISO/IEC 17025 calibration traceability requirements when operated under GLP-compliant workflows. The system meets essential safety and electromagnetic compatibility criteria per EU Directive 2014/30/EU (EMC Directive) and 2014/35/EU (LVD). For regulated environments—including pharmaceutical QC labs—optional audit trail, electronic signature, and 21 CFR Part 11 compliance packages are available via TopSpin’s validated software modules.

Software & Data Management

TopSpin 4.2 serves as the unified acquisition, processing, and analysis environment. It provides full scripting capability (Tcl/Tk, Python API), batch processing, spectral database integration (e.g., HMDB, BMRB), and automated peak picking with statistical validation. Raw FID data is stored in Bruker’s proprietary format (fid, acqus, procs), ensuring bit-level integrity and long-term archival reproducibility. Data export adheres to NMR-ML and JCAMP-DX v5.0 standards for interoperability with third-party cheminformatics platforms. Networked deployment supports centralized instrument scheduling, remote monitoring, and role-based access control aligned with ISO 27001 information security principles.

Applications

This system is routinely deployed in molecular structure determination of natural products and synthetic intermediates; protein-ligand binding affinity quantification (K_D); polymer microstructure characterization (tacticity, branching); metabolite profiling in biofluids; quality control of active pharmaceutical ingredients (APIs); and materials science investigations of battery electrolytes or MOFs. Its high field strength and stability make it particularly suitable for diffusion-ordered spectroscopy (DOSY), relaxation time mapping (T₁/T₂), and heteronuclear correlation experiments requiring high digital resolution and phase accuracy.

FAQ

What is the typical helium consumption rate for the Ascend Evo magnet at 400 MHz?
With standard operation and no recondensation, helium boil-off is typically below 0.8 L/day. Optional cryocooler-based recondensation systems can extend refill intervals to 12–24 months.
Is the system compatible with automation and sample changers?
Yes—it supports Bruker’s SampleJet and SampleCase robotic handling systems, enabling unattended overnight acquisition across up to 96 samples.
Can the AVANCE NEO run solid-state MAS experiments?
Yes—when configured with a MAS probe (e.g., 4 mm HFX or 3.2 mm CPMAS), it supports magic-angle spinning up to 15 kHz, including CP, REDOR, and DNP-enhanced experiments.
Does Bruker provide factory calibration and performance verification reports?
Each system ships with a comprehensive Factory Acceptance Test (FAT) report documenting field homogeneity, RF linearity, pulse fidelity, and temperature stability—traceable to NIST standards.
What service and support options are available post-installation?
Bruker offers multi-tiered service agreements including Preventive Maintenance (PM), Extended Warranty, and 24/7 remote diagnostics via SMARTlink—fully documented in accordance with ISO 9001-certified service processes.