Agilent 7890A GC / 7000B Triple Quadrupole Mass Spectrometer (Used, Refurbished)

Overview

The Agilent 7890A GC / 7000B Triple Quadrupole Mass Spectrometer is a rigorously refurbished, performance-validated benchtop analytical system engineered for trace-level pesticide residue analysis in complex matrices. This integrated platform combines Agilent’s industry-standard 7890A gas chromatograph—featuring precision electronic pressure control (EPC), high-speed oven ramping (up to 120 °C/min), and robust inlet configurations (including split/splitless, PTV, and cool-on-column)—with the 7000B triple quadrupole mass spectrometer, which delivers exceptional selectivity and sensitivity via multiple reaction monitoring (MRM) mode. The system operates on the fundamental principle of chromatographic separation followed by ionization (typically electron ionization, EI), mass filtering in Q1, collision-induced dissociation (CID) in Q2 (collision cell), and final mass selection in Q3—enabling quantitative determination of target analytes at sub-ppt levels in food, environmental, and agricultural samples. Designed for regulatory compliance workflows, it supports validated methods aligned with AOAC, EN 15662, and ISO 17025 requirements.

Key Features

• Fully refurbished Agilent 7890A GC module with factory-calibrated EPC modules, verified retention time stability (< ±0.02 min over 24 h), and dual independent oven temperature control zones.
• Agilent 7000B triple quadrupole mass spectrometer with high-efficiency electron multiplier detector, optimized RF/DC voltage tuning, and low-noise electronics ensuring < 0.5% relative standard deviation (RSD) for MRM peak area reproducibility across 100 injections.
• Integrated GC-MS interface with transfer line temperature control (up to 350 °C) and inert, low-dead-volume connections to minimize analyte degradation and carryover.
• Pre-installed and validated ChemStation software (version E.02.02.1430 or later) with embedded method templates for multi-residue pesticide screening (e.g., QuEChERS-based workflows).
• Comprehensive refurbishment protocol including vacuum system overhaul (turbomolecular pump replacement, leak-checked to < 5×10⁻⁸ mbar·L/s), ion source cleaning and alignment, detector gain calibration, and full system performance qualification (SPQ) per Agilent Application Note 5991-4417EN.

Sample Compatibility & Compliance

This GC-QQQ system is routinely deployed for multiclass pesticide residue analysis in fruits, vegetables, cereals, soil, water, and animal tissues following QuEChERS, EN 15662, or EPA Method 1694 extraction protocols. It accommodates both volatile and semi-volatile organophosphates, organochlorines, pyrethroids, neonicotinoids, and triazoles. All hardware and software configurations comply with GLP documentation standards; audit trail functionality, electronic signatures, and user access controls are enabled per FDA 21 CFR Part 11 requirements when operated with compliant network infrastructure and server configuration. Instrument qualification documentation—including Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ) reports—is provided with each unit.

Software & Data Management

Data acquisition and processing are performed using Agilent MassHunter Quantitative Analysis software (licensed version compatible with 7000B firmware), supporting automated calibration curve generation, internal standard normalization, batch processing, and customizable reporting templates. Raw data files (.D format) are stored in a secure, timestamped directory structure with SHA-256 hash verification. The system supports LIMS integration via ASTM E1384-compliant export formats (e.g., CSV, XML) and includes built-in tools for method validation parameters: LOD/LOQ estimation, linearity assessment (r² ≥ 0.999), precision (intra-day and inter-day RSD ≤ 15%), and recovery evaluation (70–120% for fortified samples). Backup and archiving follow ISO/IEC 27001-aligned data retention policies.

Applications

• Quantitative multi-residue analysis of >300 pesticides in food commodities per EU Regulation (EC) No 396/2005 maximum residue level (MRL) enforcement.
• Confirmatory testing in national food safety surveillance programs requiring MS/MS specificity to eliminate matrix interferences.
• Environmental monitoring of persistent organic pollutants (POPs) in surface water and sediment extracts.
• Method development and validation support for contract laboratories accredited to ISO/IEC 17025:2017.
• Academic and governmental research on pesticide metabolism, degradation kinetics, and environmental fate modeling.

FAQ

Is this system supplied with a valid Certificate of Calibration and Performance Verification?
Yes. Each unit includes a full SPQ report signed by an Agilent-certified service engineer, documenting retention time reproducibility, MRM sensitivity (e.g., 10 fg on-column injection of chlorpyrifos), mass accuracy (< ±0.2 Da), and system contamination status.
Does the refurbishment include replacement of consumables?
Yes. The package includes new GC inlet liners, septa, gold-plated ferrules, column nuts, and a complete set of MS ion source components (electron filament, repeller, extractor lens assembly) installed and aligned pre-shipment.
Can this system be upgraded to support newer software versions or add-ons like MassHunter Workstation?
Yes. The 7000B platform is compatible with MassHunter Quantitative Analysis v10.x (with appropriate firmware update and license key), subject to Agilent’s current support lifecycle policy.
What warranty and technical support options are available?
Standard offering includes a 12-month parts-and-labor warranty covering all refurbished subsystems, plus remote diagnostics and application support from certified GC-MS specialists. Extended service contracts (up to 3 years) and on-site preventive maintenance plans are available upon request.