Agilent 1290 Infinity Wellplate Sampler (G4226A)

What you are buying

A refurbished Agilent 1290 Infinity G4226A wellplate sampler. It draws a precise volume from a vial or well plate and injects it onto the column, at pressures to 1200 bar for sub-two-micron column technology.

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 G4226A around an X-Z-theta robotic transport mechanism, driven by stepper motors and monitored by optical encoders, to position the sampling arm precisely over vials or well plates. An integrated metering device draws the sample into the needle and flushes it onto the column through a controlled injection sequence. A vial and plate pusher mechanism stabilizes the container during needle withdrawal, which supports reliable operation when septa are used. A flow-through design flushes the complete flow path with mobile phase after each injection. A dedicated needle flush station rinses the needle’s exterior with a peristaltic pump, cutting carryover to under 0.004 percent. The standard injection range runs 0.1 to 20 microliters, extending to 40 microliters with an optional loop or 120 microliters with the large volume injection kit; a 100-microliter upgrade kit lowers the maximum pressure from 1200 to 600 bar. Injection precision holds under 0.25 percent RSD from 5 to 20 microliters. A 384-well plate configuration processes up to 768 samples unattended. An optional 1290 Infinity Thermostat adds Peltier temperature control from 4 to 40 degrees Celsius. Early Maintenance Feedback and extensive diagnostics through the Control Module and Agilent Lab Advisor software round out the design.

What each module does

High-pressure injection

Draws a precise volume from a vial or well and injects it onto the column at pressures to 1200 bar, with a flow-through design that flushes the path after each injection to keep carryover low.

Automated sequencing

Runs unattended sequences from a 384-well plate, up to 768 samples, using an X-Z-theta robot to position the sampling arm for each injection.

Technical detail

*OEM specifications for brand new instrument.

Labs that run this system

The 1290 HPLC is method-compatible across the techniques most regulated and research labs run every day. These are the application areas buyers ask about most.