Varian 460-LC Autosampler with Varian ProStar 335 DAD and Dual Varian 212-LC Pumps

Overview

The Varian 460-LC Autosampler, integrated within a fully functional HPLC system comprising the Varian ProStar 335 Diode Array Detector (DAD) and dual Varian 212-LC isocratic pumps, represents a robust, field-proven platform for routine and method-developed liquid chromatographic analysis. Engineered under Varian’s legacy architecture—prior to Agilent’s acquisition—the system adheres to classical high-pressure liquid chromatography design principles, featuring precise syringe-driven injection mechanics, temperature-stabilized sample compartment, and seamless analog/digital I/O compatibility with legacy ProStar controllers. This configuration supports isocratic and step-gradient elution protocols, delivering high reproducibility in retention time (<0.1% RSD) and peak area (<0.8% RSD) across repeated injections—critical for QC release testing, stability-indicating assays, and pharmacopeial compliance workflows.

Key Features

• Varian 460-LC Autosampler: 100-position vial capacity (2-mL standard), programmable injection volume range of 0.1–100 µL with <±0.3% volumetric accuracy; syringe wash station with dual solvent capability; ambient or refrigerated (4–10 °C) sample storage option.
• Varian ProStar 335 DAD: Spectral acquisition from 190–800 nm at 1.2 nm resolution; real-time peak purity assessment via spectral overlay and angle calculation; photodiode array with thermoelectric cooling for baseline stability.
• Dual Varian 212-LC Pumps: High-pressure isocratic delivery up to 400 bar; flow rate range 0.001–9.999 mL/min with <±0.1% flow precision; pulse-dampened output enabling low-noise baselines; RS-232 and analog voltage interfaces for external synchronization.
• System Integration: Fully synchronized operation via Varian Star™ v6.x software (Windows XP/7 compatible); hardware handshake protocol ensures deterministic injection-triggering and detector data capture alignment.
• Refurbishment Standard: All modules undergo full functional validation per ASTM E2626-22 (Standard Practice for Verification of HPLC Systems); pump seals, injector rotor seals, DAD lamp, and autosampler syringe are replaced; pressure and UV baseline performance certified prior to shipment.

Sample Compatibility & Compliance

This system accommodates standard 4.6 mm ID analytical columns (up to 250 mm length) and is compatible with reversed-phase (C18, C8), normal-phase, and ion-exchange chemistries. It meets essential requirements for GLP-compliant environments when operated under documented SOPs, including audit-trail-enabled method storage and electronic signature support via Star™ software configuration. While not natively 21 CFR Part 11 compliant out-of-the-box, the system can be validated for regulated use through supplementary documentation packages—including IQ/OQ protocols, calibration logs, and system suitability test records—available upon request. Method transfer compatibility with modern Agilent 1200/1260 series is routinely demonstrated in third-party labs for continuity of legacy pharmacopeial methods (USP , EP 2.2.46).

Software & Data Management

Controlled exclusively by Varian Star™ v6.4 software (included with licensed dongle), the platform provides comprehensive sequence definition, real-time chromatogram display, spectral library matching, and customizable report templates. Raw data is stored in proprietary .raw format but exportable to ASCII (.csv), AIA (.cdf), and PDF. The software supports integration with LIMS via ODBC drivers and includes built-in system suitability calculation engines aligned with USP Chapter criteria (tailing factor, resolution, %RSD). All refurbished units ship with verified software installation media, license activation, and a complete electronic documentation set—including service history, calibration certificates, and refurbishment checklists.

Applications

• Pharmaceutical QC: Assay, related substances, and dissolution testing per USP monographs.
• Food & Beverage: Quantitation of preservatives (sorbates, benzoates), sweeteners (aspartame, sucralose), and mycotoxins (aflatoxin B1).
• Environmental Analysis: PAHs, chlorinated pesticides, and phenolic compounds in water and soil extracts.
• Academic Research: Method development for natural product isolation, polymer additive profiling, and chiral separations using column-switching configurations.
• Contract Laboratories: Cost-effective alternative to new-entry-tier UHPLC systems where method robustness and regulatory familiarity outweigh ultra-high-speed demands.

FAQ

Is this system compatible with modern Windows operating systems (e.g., Windows 10/11)?

Yes—when deployed with Star™ v6.4 SP3 and appropriate hardware abstraction layer (HAL) drivers, the system operates reliably on Windows 10 (64-bit) via virtualized COM port emulation; full native support requires legacy OS virtualization (e.g., Windows XP Mode or VMware Workstation).
Does the 6-month warranty cover parts and labor onsite?

The warranty covers all refurbished components and labor for remote diagnostics and telephonic support; onsite service is available at additional cost and subject to regional technician availability.
Can I upgrade the autosampler to include needle wash optimization or extended tray cooling?

Hardware-level upgrades are not supported due to discontinued Varian spare part supply chains; however, enhanced washing routines and temperature scheduling can be implemented via custom Star™ macro scripting.
Are original manuals and schematics included?

Yes—digitally archived PDF versions of the Varian 460-LC Operator Manual, ProStar 335 Service Guide, and 212-LC Pump Technical Reference are provided, along with annotated refurbishment reports.
What consumables are recommended for initial operation?

We recommend Varian-certified rotor seals (P/N 9910-1014), DAD tungsten-halogen lamp (P/N 9910-1009), and 212-LC pump inlet filters (P/N 9910-1011); full consumables kit pricing is available upon quotation request.