USED AGILENT TECHNOLOGIES G4290C VL

15-Day
Refurbishment cadence
OEM-Spec
Verified against OEM and published benchmarks; report included.
On-Staff
Solution Scientists
Since 1996
Three decades supporting labs
What you are buying
An Agilent 1220 Infinity II G4290 LC System with a built-in diode array detector. It bundles a gradient pump, autosampler, column oven, and detector into one all-in-one system for routine analysis.
Every unit moves through the GenTech Certified process. Solution Scientists disassemble and inspect each module, replace all consumables and degraded wear components, then tune and calibrate the instrument and verify performance against OEM and published benchmarks using known reference chemicals. The instrument ships with its verification report. A certified-refurbished system gives you that performance without the capital cost or the lead time of a new purchase.
What Agilent says about this platform
The G4290 bundles a two-channel gradient pump, an integrated degassing unit, an autosampler, a column oven, and a variable wavelength detector into one system. The pump mixes at low pressure and reaches up to 600 bar, with a flow range of 0.2 to 10 milliliters per minute, dropping to a 5-milliliter-per-minute ceiling at full pressure and extending to 10 milliliters per minute at 200 bar. The autosampler injects 0.1 to 100 microliters from a 100-vial tray, also rated to 600 bar. The column oven holds one 25-centimeter column up to 60 degrees Celsius.  OpenLab CDS Workstation or ChemStation controls the system.
What each integrated module does
Gradient pump
Delivers a low-pressure-mixed gradient up to 600 bar, with an integrated degassing unit built in.
Autosampler
Draws a precise volume from a 100-vial tray and injects it onto the column, with an injection range of 0.1 to 100 microliters.
Column oven
Holds one 25-centimeter column at a set temperature up to 60°C, which fixes selectivity and retention time.
Diode Array detector
The Agilent 1220 Infinity II LC with DAD pairs a 600-bar gradient pump, autosampler, and column oven with a 1024-element diode array detector, capturing full UV spectra at up to 80 Hz for peak purity and multiwavelength analysis in a compact, affordable UHPLC-class system.
Technical detail
*OEM specifications for brand new instrument.
What “GenTech Certified” means
Refurbishment at GenTech is a defined process, not a wipe-down. Every system moves through the same specific stages.
1. Disassembly and rebuild. Solution Scientists strip the instrument down, clean each module inside and out, and rebuild it from the frame up. They replace pump seals, pistons, and check valves to specification.
2. Configuration and new parts. Solution Scientists install the options and modules you selected and fit new wear parts throughout. They replace the detector lamp with a new one and reset the lamp hours.
3. Diagnostic and performance testing. Solution Scientists tune and calibrate the instrument, run system diagnostics, and confirm detector wavelength accuracy. They test full-system pressure and gradient performance against OEM and published benchmarks using known reference chemicals.
4. Delivery and installation. The instrument ships in protective packing with a one-year warranty option and professional installation available from a GenTech Solution Scientist.
Labs that run this system
The 1220 HPLC is method-compatible across the techniques most regulated and research labs run every day. These are the application areas buyers ask about most.
Assay, Impurity and dissolution
The 1220 transfers cleanly into USP monograph assays, related-substance profiling, and dissolution testing. Quaternary blending simplifies mobile-phase transfer between labs.
EPA HPLC methods
Diode array detection supports EPA HPLC methods for contaminants and residues in water and soil, including PAHs, explosives, and carbamates.
Additives and vitamins
The system quantifies preservatives, sweeteners, organic acids, and fat-soluble vitamins at the throughput a production-support lab needs.
Cannabinoid potency
HPLC with UV detection is the reference technique for potency. The 1220 resolves the major cannabinoids for compliance and label-claim testing.
Botanical actives
Labs quantify polyphenols, flavonoids, and marker compounds in extracts and nutraceutical formulations across long, reproducible sequences.
Screening and drug monitoring
The 1220 runs HPLC-UV workflows for therapeutic drug monitoring and drugs-of-abuse screening, where method portability and uptime matter more than peak novelty.
Purity and additives
Industrial labs separate and quantify synthesis intermediates, polymer additives, and stabilizers for QC and release testing.
Four-solvent scouting
Agilent recommends the quaternary pump for method development. Blend up to four solvents to scout selectivity before you lock a final method.
Proteomics, metabolomics, lipidomics
Many omics workflows use mass spectrometry for detection and rely on LC for separation. The 1200 serves as the front end feeding your MS or fraction collector.
Additional Information
Documentation
Financing

Agilent 1220 Infinity II LC VL System User Manual
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Need a single module instead?
Replacing a failed pump or expanding an existing stack? Every module in this system is available individually, in stock and performance-verified.
[In this stack]
Agilent 1220 Infinity II G4290C: Verified
Integrated modules: • Gradient Pump • Autosampler • Column Oven • DAD: Verified
Warranty Coverage Extended options available: Included
Workstation with preloaded software: Included
[Each module is individually serialized and performance-verified before the stack is assembled and tested as a complete system.]
Max pressure: 400 bar
Flow range: 0.2 to 10 mL/min
Injection range: 0.1 to 100 µL, 100-vial tray
Column oven: One 25 cm column, up to 60°C
Detector: DAD
Weight: 150 lbs
Dimensions: 24 × 24 × 24 in
Model: G4290C VL
OEM: Agilent Technologies
Condition: Refurbished
Financing: Financing Options Available