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 6120 single quadrupole mass spectrometer. This listing is the bare MS; a compatible HPLC front end is sold separately or paired at the bench. The ion source converts the LC eluent into gas-phase ions. The single quadrupole confirms target compounds by mass alongside the chromatographic peak. GenTech rebuilds and tests the source and the analyzer, then verifies the instrument against reference standards.
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 6120 around a G1948B electrospray ion source, with the nebulizer positioned at a right angle to the inlet capillary. The orthogonal geometry vents most of the solvent from the spray chamber before it reaches the capillary. Only ions, drying gas, and a small amount of solvent pass through. Autotuning sets most operating parameters automatically. The ion transport and focusing region sits inside a vacuum manifold, which keeps the quadrupole at low pressure through staged vacuum regions. A single-point data system gives full control of an Agilent 1100 or 1200 Series HPLC alongside the 6120 itself. Time programming cycles through up to four acquisition modes on a scan-by-scan basis within a single run.
What each module does
Ion source
A G1948B electrospray source converts the liquid eluent into gas-phase ions, with an orthogonal nebulizer design that vents most solvent before it reaches the capillary.
Mass analyzer
A single quadrupole filters ions by mass and confirms target compounds, scanning a full spectrum or holding on selected ions for routine confirmation.
| In this stack | |
| Single Quadrupole MS G6120 A/B | 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. | |
Technical detail
| Ion source | G1948B electrospray, orthogonal nebulizer |
| Mass range | Up to m/z 2,000 |
| Time programming | Up to 4 acquisition modes per run |
| HPLC front end | Sold separately; pairs with 1100 or 1200 Series |
*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 6120 is method-compatible across the techniques most regulated and research labs run every day. These are the application areas buyers ask about most.
PFAS testing
EPA Method 537.1 and similar state programs require quantitation of per- and polyfluoroalkyl substances in drinking water at low parts-per-trillion levels, a sensitivity range triple quadrupole MS is built to reach.
Pesticides and mycotoxins
Multi-residue pesticide panels and mycotoxin screens in food and cannabis testing often cover more than 100 compounds in a single run, each requiring the selectivity a triple quadrupole provides against a complex matrix background.
Trace impurities and cleaning validation
Pharmaceutical cleaning validation protocols confirm that equipment surfaces carry no detectable residue of the previous product, often down to sub-part-per-billion swab or rinse limits.
Quantitative toxicology
Forensic and clinical toxicology panels quantify drugs and metabolites in blood, urine, or tissue against legally defensible limits, where a triple quadrupole’s selectivity rules out false positives from matrix interferences.
GLP-grade quantitation
Good Laboratory Practice studies require documented, audit-ready quantitation with full method validation, a standard regulated bioanalysis labs run routinely on triple quadrupole platforms.
| Weight | 200 lbs |
|---|---|
| Dimensions | 48 × 24 × 24 in |
| Financing | Financing Options Available |
Financing Options Available. Finance Builder.
Need a main board instead?
Replacing a failed pump or looking to upgrade your mass spec? Every module in this system is available individually, in stock and performance-verified.
