Agilent 7693A Autosampler with 150-Position Tray (G4514A) – Refurbished Unit

Overview

The Agilent 7693A Autosampler (G4514A) is a refurbished, factory-aligned liquid-handling module engineered for high-throughput, reproducible sample introduction in gas chromatography (GC) laboratories. Built upon Agilent’s proven dual-tower autosampling architecture, the 7693A extends beyond simple injection automation by integrating programmable sample preparation capabilities—such as precision dilution, internal standard addition, controlled heating of the sample tray (up to 150 °C), vortex mixing, and solvent dispensing—directly within the autosampler workflow. This eliminates manual intervention between preparation and injection, reducing inter-operator variability and minimizing carryover risk. Its modular design supports both single-tower deployment and scalable expansion (e.g., adding wash stations or auxiliary syringe modules), ensuring adaptability across evolving method requirements and instrument fleets. As a pre-owned unit refurbished to Agilent-recommended functional specifications, it retains full compatibility with Agilent 7820A, 7890B, and 8890 GC systems, and operates under native OpenLab CDS or legacy ChemStation software environments.

Key Features

• 150-position sample tray (2-mL vials), enabling extended unattended operation—50% greater capacity than the 7683B platform
• Dual-tower sampling architecture with independent syringe control, supporting parallel sample aspiration and injection for enhanced throughput
• Programmable sample preparation: automated dilution (1:2 to 1:1000), internal standard spiking (volumetric accuracy ±0.5% RSD), heating (ambient to +150 °C), and orbital mixing (0–3000 rpm)
• Multi-syringe support: standard 100-µL syringe (50-µL max single injection); optional 250-µL and 500-µL syringes with Enhanced Sample Handling (ESH) needle holder
• Integrated wash station with dual solvent capability (e.g., methanol/water) and customizable rinse cycles to ensure cross-contamination control
• Modular chassis design allows relocation between GC instruments without recalibration; mechanical alignment verified per Agilent Service Bulletin SB-7693-01

Sample Compatibility & Compliance

The 7693A accommodates standard 12×32 mm crimp-top or screw-cap vials (2-mL), as well as 1.5-mL microvials with optional adapters. It handles aqueous, organic, and moderately viscous matrices (up to 20 cP) without clogging when operated within specified syringe speed and dwell-time parameters. From a regulatory standpoint, the system supports audit-trail-enabled operation when paired with OpenLab CDS 2.x or later (21 CFR Part 11 compliant configuration). Its repeatable injection precision (<0.5% RSD for 10-µL injections, n=10) meets performance criteria outlined in ASTM D4052 (density of petroleum products), USP (chromatographic separations), and ISO/IEC 17025:2017 clause 7.2.2 (method validation for automated sample introduction). All refurbished units undergo functional verification per Agilent’s Used Equipment Acceptance Criteria (UEAC-7693 Rev. D), including syringe leak testing, tray positioning repeatability (±0.1 mm), and temperature uniformity mapping across the heated zone.

Software & Data Management

Control and method development are performed via Agilent’s Easy SamplePrep software—a dedicated module integrated into OpenLab CDS or accessible as a standalone interface. Easy SamplePrep enables drag-and-drop construction of multi-step sample preparation sequences (e.g., “add 50 µL IS → dilute 1:5 → heat at 60 °C for 2 min → inject 2 µL”), with real-time status monitoring and event logging. All actions—including syringe actuation, heater setpoints, and valve switching—are timestamped and stored in the CDS audit trail. Raw method files (.sam) and execution logs (.log) are digitally signed and exportable in CSV or XML format for LIMS integration. For labs operating under GLP or GMP frameworks, the system supports user-role-based access control, electronic signatures, and periodic revalidation protocols aligned with Annex 11 and FDA guidance on computerized systems.

Applications

The 7693A is routinely deployed in environmental testing (EPA Method 8260D/8270E), petrochemical analysis (ASTM D5501, D6730), pharmaceutical residual solvent quantitation (ICH Q2(R2)), and food safety screening (AOAC 2012.01). Its ability to perform on-deck derivatization (e.g., silylation with BSTFA at elevated temperatures) and automated calibration curve generation (serial dilution with internal standard correction) makes it especially valuable for regulated QC/QA laboratories requiring full traceability from sample vial to chromatogram. The heated tray function also supports headspace-equilibrated samples and thermally labile analytes requiring pre-injection stabilization.

FAQ

Is this unit covered by an Agilent warranty?
No—this is a third-party refurbished unit. It carries a 6-month limited hardware warranty covering defects in materials and workmanship, administered by the authorized refurbisher.
Can the 7693A be used with non-Agilent GC systems?
It is electrically and mechanically designed for Agilent GCs only; interfacing with other vendors’ instruments requires custom cabling and firmware adaptation not supported by Agilent.
Does the refurbishment include replacement of all fluidic components?
Yes—syringes, septa, rotor seals, wash needles, and PTFE tubing are replaced with genuine Agilent parts during refurbishment.
What documentation is provided with the unit?
Each shipment includes a Certificate of Functional Verification, refurbishment report, calibration log, and updated service history summary.
Is Easy SamplePrep software included?
Yes—the latest licensed version compatible with your CDS release is supplied on encrypted USB media, along with installation and licensing instructions.