USED AGILENT TECHNOLOGIES G2258A

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
A refurbished Agilent 1200 Series G2258A dual loop autosampler. It injects high sample volumes quickly for preparative HPLC and sample enrichment work, switching between preparative and analytical scale without a hardware change.
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
Agilent built the G2258A around two preinstalled sample loops of different volume, letting an operator switch between preparative and analytical scale work without a hardware change. Partial loop filling injects any volume up to the loop’s capacity; complete loop filling centers the sample and leaves equal excess plugs at both ends of the loop. The injection range runs 0.1 to 5000 microliters in 0.1-microliter steps, with viscosity handling from 0.2 to 5 centipoise. The metering syringe sits outside the solvent flow path from pump to column. A separate flush solvent bottle rinses that part of the hydraulic path after each injection. The sample tray holds up to two well plates, vial plates, or tube plates in any combination. A thermostatted version adds the G1330B thermostat for temperature-sensitive samples. ChemStation, the Control Module G1323B, or the Instant Pilot G4208A controls the sampler. Early Maintenance Feedback keeps an electronic record of maintenance and errors.
 
What each module does
Dual loop injection
Injects from either of two preinstalled loops, in partial or complete loop fill mode, at flow rates from analytical to preparative scale.
Automated sequencing
Runs unattended sequences across well plates, vial plates, or tube plates in any combination.
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 five 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. Data package you approve before shipment. The verification data goes to you for approval before the system leaves the bench. You see exactly how the instrument performs before it ships.
5. 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 1200 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 1200 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 1200 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 1200 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

Financing Options Available.  Finance Builder.
Need a single module instead?
Replacing a failed pump or expanind an existing stack? Every module in this system is available individually, in stock and performance-verified.
[In this stack]
Agilent 1200 Dual Loop Autosampler G2258A: Verified
1260 Vialsampler G7129A: Verified
1260 Multicolumn Thermostat G7116A: Verified
1260 Diode Array Detector G7115A: Verified
Workstation loaded with software: Included
[Each module is individually serialized and performance-verified before the stack is assembled and tested as a complete system.]
Injection range: 0.1 to 5,000 µL, 0.1 µL steps
Injection modes: Partial or complete loop filling
Viscosity range: 0.2 to 5 cp
Weight / dimensions: 14 kg, 20 x 34.5 x 44 cm
Sample tray: Up to 2 well plates, vial plates, or tube plates
Software: Loaded on workstation
Condition: Refurbished
Model: G2258A
OEM: Agilent Technologies
Financing: Financing Options Available