Agilent ICP-MS 7500 Used Quadrupole Inductively Coupled Plasma Mass Spectrometer

Overview

The Agilent ICP-MS 7500 is a high-sensitivity, quadrupole-based inductively coupled plasma mass spectrometer originally engineered for ultra-trace elemental analysis across demanding research and industrial laboratories. As a second-generation ICP-MS platform from Agilent Technologies, the 7500 series integrates a robust RF-driven argon plasma source with a high-transmission ion optics system and a stable quadrupole mass filter to deliver exceptional detection capability for elements across the periodic table—from lithium (Li) to uranium (U)—with minimal polyatomic interferences. Its core measurement principle relies on atomization, ionization, and mass-resolved detection: liquid or digested samples are nebulized into an ~7,000 K Ar plasma, where >90% ionization efficiency is achieved; resulting ions are extracted through differential vacuum stages and separated by mass-to-charge ratio (m/z) before quantification via electron multiplier detection. This architecture enables routine sub-part-per-quadrillion (ppq) detection limits for key isotopes—including ⁷Li, ⁵⁹Co, ²⁰⁸Pb, and ²³⁸U—making it particularly suitable for applications requiring regulatory-grade trace metal verification.

Key Features

• High-power shielded-torch cold plasma interface for enhanced stability with organic and high-salt matrices
• Dual-mode sample introduction: compatible with standard pneumatic nebulizers, microflow systems, and laser ablation (LA-ICP-MS) interfaces (requires optional LA module)
• Collision/reaction cell technology (optional H₂ or He gas mode) for suppression of oxide and argide interferences (e.g., ⁴⁰Ar¹⁶O⁺ on ⁵⁶Fe⁺)
• Real-time internal standard correction using online addition of In, Rh, Re, or Bi standards
• Multi-isotope acquisition capability with dwell times configurable down to 10 µs per isotope
• Integrated autosampler support for unattended batch operation (Agilent G1888 or third-party compatible)
• Refurbishment includes full vacuum system inspection, detector replacement if required, and calibration verification against NIST SRM 3100 series standards

Sample Compatibility & Compliance

The Agilent ICP-MS 7500 demonstrates broad compatibility with complex sample types encountered in regulated and academic settings. It routinely handles ultrapure reagents (e.g., HF, HNO₃, TMAH), volatile organics (acetone, methanol, IPA), high-boiling matrices (photoresists, BPSG/PSG films), and gaseous precursors (SiH₄, NF₃). Solid sampling is enabled via laser ablation or direct solid sampling (DSS) accessories. All operational protocols align with ASTM D5673 (water), ISO 17294-2 (wastewater), USP / (elemental impurities in pharmaceuticals), and EPA Method 6020B (trace metals in environmental solids and liquids). The system’s firmware and data acquisition software support audit trails, electronic signatures, and secure user access controls compliant with FDA 21 CFR Part 11 requirements when deployed in validated environments.

Software & Data Management

Data acquisition and processing are managed via Agilent MassHunter Workstation Software (version B.07.x or later, included with instrument). This platform provides method development tools for interference correction (e.g., mathematical correction of ⁴⁰Ca¹⁶O⁺ on ⁵⁶Fe⁺), isotope ratio calculation, and time-resolved LA-ICP-MS signal deconvolution. Raw data files (.d format) are stored in a structured directory hierarchy with embedded metadata (instrument parameters, calibration history, operator ID). Export options include CSV, Excel, and XML formats for LIMS integration. For long-term archival, MassHunter supports automated backup to network drives or NAS systems with timestamped versioning—critical for GLP audit readiness.

Applications

• Environmental monitoring: quantification of As, Cd, Pb, Hg, and U isotopes in drinking water, seawater, soil leachates, and fly ash per EPA 6020B
• Semiconductor metrology: sub-ppt-level contamination screening of Si wafers, GaAs substrates, quartz furnace components, and high-purity acids
• Geochemical research: precise isotope ratio measurements (e.g., Sr, Nd, Hf) following chemical separation and TIMS cross-validation
• Clinical and nutraceutical analysis: speciation-informed quantitation of Se, Cr, and I in serum, urine, and fortified foods
• Nuclear safeguards: isotopic fingerprinting of ²³⁵U/²³⁸U and ²⁴⁰Pu/²³⁹Pu ratios in spent fuel simulants
• Petrochemical QA/QC: V, Ni, Fe, and Na profiling in crude oil fractions and catalyst residues
• Forensic trace evidence: elemental mapping of glass fragments, gunshot residue particles, and paint layers via LA-ICP-MS

FAQ

Is this unit fully refurbished and performance-verified?
Yes. Each Agilent ICP-MS 7500 undergoes comprehensive refurbishment including vacuum system leak testing, ion lens cleaning and alignment, detector gain calibration, and multi-element sensitivity verification using Agilent-certified tuning solutions.
Does the system include original Agilent software licenses?
Yes—MassHunter Workstation B.07.x software with active maintenance license is included; installation media, activation keys, and documentation are provided.
Can the instrument be validated for GMP use?
The platform supports IQ/OQ/PQ execution per ASTM E2500 and Annex 11 guidelines. Full validation documentation templates and test protocols are available upon request.
What service support is available post-purchase?
A 12-month limited hardware warranty is included. Extended service contracts with remote diagnostics, on-site preventive maintenance, and priority parts logistics are offered through Agilent-authorized service partners.
Are consumables and spare parts still available?
All critical consumables—including torches, cones (Ni or Pt), nebulizers, and skimmer tips—are commercially available from Agilent and qualified third-party suppliers. Legacy part numbers remain active in Agilent’s global inventory system.