How is the performance of used Agilent 7890A, 7890B gas chromatograph

Used Agilent 7890A, 7890B gas chromatographs are state-of-the-art chromatographs that provide outstanding performance for a variety of applications
.

Mainly because of the use of Electronic Pneumatic Control (EPC) and high precision oven temperature control
.

Each EPC unit is optimized with dedicated inlet and detector options
.

The temperature control of the Agilent GC 7890 series column oven can meet the requirements of fast and accurate gradient temperature control
.

The overall thermal performance provides excellent chromatographic performance, including peak symmetry, retention time reproducibility, and retention index accuracy
.

The combination of precise gas line pressure control and accurate temperature control results in outstanding retention time reproducibility, which is the foundation of all chromatographic assays
.

Agilent's Capillary Flow Technology opens a new chapter in chromatographic analysis.
Reliable, leak-free, capillary connections in the oven can withstand long-term GC oven program heating and reciprocating cycles
.

Used Agilent 7890A, 7890B gas chromatograph system performance supports simultaneous installation: - two inlets - three detectors - four detectors.
Quantitative analysis of peaks over the entire concentration range of the detector (FID of 107) is possible
.

All inlets and detectors use EPC, which is optimized for control range and separation performance for specific inlet and detector components
.

Up to six EPC modules can be installed, providing up to 16 channels of EPC control
.

Pressure setpoint and control accuracy to 0.
001 psi provides more precise retention time locking for low pressure analyses
.

EPC for capillary columns has four modes of column flow control: constant pressure mode and gradient pressure (three-step gradient) mode, constant flow mode or gradient flow (three-step gradient) mode
.

The average linear flow rate of the column can be calculated
.

Standardized atmospheric pressure and temperature compensation, even if the laboratory environment changes, the test results will not change
.

The chromatograph can be monitored in real time through the LAN interface when using the Instrument Monitoring and Smart Diagnostics software, even when connected to a data system
.

One-touch operation from the keyboard to enter maintenance and service mode
.

Pre-programmed leak tests
.

The automatic liquid sampler is fully integrated into the control of the main unit
.

Parameters and automatic control can be set using the local keyboard or through a network data system
.

Clock time programming can be initiated through the front panel to initiate an event (on/off, start method, etc.
) at a future date or time
.

The deviation of each analysis time is recorded to ensure that all analysis method parameters are archived and saved
.

Various conventional gas injection and column switching valves are available
.

550 time events can be set
.

Displays all GC and automatic liquid sampler (ALS) settings on the GC instrument or data system
.

Used Agilent 7890A, 7890B gas chromatographs feature enhanced firmware to expand the capabilities of Capillary Flow Control, and enhanced data system software to simplify setup and operate backflush
.

These new technologies make the analysis of complex matrices and unknowns easier, and through 2D heart-cutting, detector splitting, and column backflushing routinely bring greater productivity and data integrity to the analysis
.

Agilent 7890A, 7890B gas chromatographs have built-in capabilities for monitoring system resources (counting, electronic logging, and diagnostics)
.