USED AGILENT TECHNOLOGIES G7161A

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 1260 Infinity G1312B Binary Pump SL. It delivers a two-solvent high-pressure gradient at constant, low-pulse flow, rated to 600 bar.
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 G1312B SL around two dual-piston in-series pumps, driven by a servo-controlled variable stroke with floating pistons and power transmission through gears and ball screws. The pump sets flow from 0.001 to 5 mL/min in 0.001 mL/min increments, with a practical flow range of 0.05 to 5.0 mL/min. Flow precision holds to 0.07 percent RSD or 0.02 minutes standard deviation, whichever is greater, with flow accuracy within 1 percent or 10 microliters per minute. Maximum pressure runs to 600 bar at flows to 5 mL/min. Pressure pulsation stays under 2 percent amplitude, typically under 1 percent, in the standard delay volume configuration. Delay volume runs 600 to 800 microliters with the standard integrated 400-microliter mixer, or as low as 120 microliters in the low-delay-volume configuration. The pump fully supports the 1200 Series DAD (G1315A/B) and MWD (G1365A/B); other detectors connect through a UIB interface. Unlike earlier binary pumps in the family, the G1312B SL has no GPIB connector.
 
What each module does
Binary pumping
Delivers a two-solvent high-pressure gradient at constant, low-pulse flow. Stable, low-pulse flow is the basis for the retention-time reproducibility every quantitative method depends on. Rated to 600 bar.
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 1260 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 1260 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 1260 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 1260 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 Preparative Binary Pump G7161A: 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.]
Flow range: 1 to 50 mL/min
Max pressure: 420 bar
Column diameter: 9.4 to 30 mm
Gradient formation: High-pressure binary, no degasser required
Companion modules: 1260 II Prep Autosampler, DAD WR, Fraction Collector
Software: Loaded on workstation
Condition: Refurbished
Model: G7161A
OEM: Agilent Technologies
Financing: Financing Options Available