The Agilent 7890A is a high-performance, configurable gas chromatograph (GC) that set the industry standard for reliability and precision. It features advanced 5th-generation Electronic Pneumatics Control (EPC) for precise flow and pressure management, allowing for a pressure setpoint resolution of 0.001 psi and retention time repeatability of less than 0.008%. The system supports multiple inlet and detector configurations (up to two inlets and three detectors simultaneously) and offers fast oven cool-down (450 °C to 50 °C in 4.0 minutes) alongside sophisticated heating profiles with up to 20 ramps. The 7890A is highly versatile, supporting detectors such as FID, TCD, micro-ECD, NPD, FPD, and various Agilent MS systems.
Specifications
Physical
| Parameter | Value |
|---|---|
| Power Supply | 120 V / 200 V / 220 V / 230 V / 240 V (configuration dependent), 48-63 Hz, up to 2950 W |
| Operating Temperature | 15 to 35 |
| Dimensions (W×H×D) | 580 × 490 × 510 |
| Weight | 49 |
System Performance
| Parameter | Value |
|---|---|
| Retention Time Repeatability | < 0.008% or < 0.0008 min |
Column Oven Specifications
| Parameter | Value |
|---|---|
| Internal Dimensions | 28 × 31 × 16 cm (W×H×D) |
| Operating Temperature Range | Ambient +4 °C to 450 °C (without cryo cooling) |
| Cryogenic Cooling Options | Liquid N2 (-80 °C to 450 °C), Liquid CO2 (-40 °C to 450 °C) |
| Temperature Setpoint Resolution | 0.1 °C |
| Maximum Heating Rate | 120 °C/min |
| Cool-down Time | 450 °C to 50 °C in 4.0 min (at 22 °C ambient) |
| Maximum Temperature Ramps | 20 ramps |
| Maximum Plateaus | 21 plateaus |
| Ambient Rejection | < 0.01 °C per 1 °C ambient change |
Electronic Pneumatics Control (EPC)
| Parameter | Value |
|---|---|
| Pressure Setpoint Resolution | 0.001 psi |
| Atmospheric Pressure Compensation | Yes, standard for all EPC modules |
| Carrier Gas Compatibility | Helium, Nitrogen, Hydrogen, Argon/Methane |
Inlet Specifications
| Parameter | Value |
|---|---|
| Supported Inlet Types | Split/Splitless (S/SL), Multimode (MMI), Purged Packed, Cool On-Column (COC), Programmable Temperature Vaporizing (PTV), Volatiles Interface (VI) |
Detector Specifications
| Parameter | Value |
|---|---|
| Supported Detector Types | FID, TCD, micro-ECD, NPD, FPD, SCD, NCD, MS |
| FID Linear Dynamic Range | > 10^7 |
| TCD Linear Dynamic Range | 10^5 |
| Maximum Data Acquisition Rate | 500 Hz |
| Mass Spectrometer (MS) Compatibility | Agilent 5975 Series MSD, 7000 Series Triple Quadrupole |
Sample Introduction / Autosampler
| Parameter | Value |
|---|---|
| Compatible Autosamplers | Agilent 7693A, 7683B, G1888, 7697A, CTC PAL |
Software and Control
| Parameter | Value |
|---|---|
| Chromatography Data System (CDS) Compatibility | OpenLAB CDS, ChemStation, EZChrom Elite |
Environmental and Regulatory
| Parameter | Value |
|---|---|
| Operating Humidity Range | 5% to 95% non-condensing |
Oven
| Parameter | Value |
|---|---|
| Maximum Run Time | 999.99 minutes |
| Column Capacity | Up to two 105 m x 0.530 mm id capillary columns or two 10-ft glass/stainless steel packed columns |
Inlets
| Parameter | Value |
|---|---|
| Maximum Temperature (S/SL Inlet) | 400 °C |
| Pressure Control Range (S/SL Inlet) | 0 to 100 psi standard (0 to 150 psi optional) |
| Total Flow Range (He/H2, S/SL Inlet) | 0 to 1250 mL/min |
| Total Flow Range (N2/Ar, S/SL Inlet) | 0 to 200 mL/min |
| Maximum Split Ratio | 7500:1 |
| Multimode Inlet (MMI) Maximum Heating Rate | 900 °C/min |
| Purged Packed (PP) Inlet Maximum Temperature | 400 °C |
Detectors
| Parameter | Value |
|---|---|
| FID Maximum Operating Temperature | 450 °C |
| TCD Maximum Operating Temperature | 400 °C |
| NPD Maximum Operating Temperature | 400 °C |
| Micro-ECD Maximum Operating Temperature | 400 °C |
| FPD Maximum Operating Temperature | 250 °C |
| Micro-ECD Linear Dynamic Range | > 5 × 10^4 (lindane) |
| NPD Linear Dynamic Range | > 10^5 |
| FPD Linear Dynamic Range (Sulfur) | > 10^3 |
| FPD Linear Dynamic Range (Phosphorus) | 10^4 |
Features & Technology
| Parameter | Value |
|---|---|
| Retention Time Locking (RTL) | Supported (requires compatible software) |
| Capillary Flow Technology (CFT) | Supported (Deans Switch, Splitters, Purged Ultimate Union) |
Pneumatics (EPC)
| Parameter | Value |
|---|---|
| Standard Pressure Range | 0 to 100 psi |
| High-Pressure Range Option | 0 to 150 psi |
Technology
Gas Chromatography (GC)
Applications
Analytical chemistry, volatile and semi-volatile compound separation, environmental analysis, hydrocarbon processing, forensics, and food safety