Agilent 7890B Technical Parameters

2.1 Column temperature box

2.1.1 Temperature range: 4 ° C to 450 ° C above room temperature

2.1.2 Temperature setting: Temperature 1 ° C; Program set heating rate of 0.1 ° C

2.1.3 Heating rate: 0.1 ° C/min~120 ° C/min

2.1.4 Temperature stability; When the ambient temperature changes by 1 ° C, it is better than 0.01 ° C

2.1.5 Program warming up: 20 levels and 21 platforms

2.1.6 * Running time: 999.99 minutes

2.1.7 Cooling rate: Reduce from 450 ℃ to 50 ℃ for no more than 6 minutes (at room temperature of 22 ℃)

2.2 Split/Non Split Capillary Column Injection Port

2.2.1 With EPC control, programmable settings for pressure, flow rate, and split ratio

2.2.2 * Operating temperature 400 ° C

2.2.3 Pressure setting range: 0~150psi, control accuracy 0.001psi

2.2.4 Flow setting range: 0~200ml/min (when using N2 as the carrier gas) 0~1000ml/min (when using H2, He as the carrier gas)

2.3 Electronic pneumatic control

2.3.1 Electronic gas path control with constant current, constant pressure, program increase flow rate, program increase pressure and other operating modes, which can achieve reverse blowing

2.3.2 Pressure accuracy: 0.001psi

2.3.3 Pressure compensation: Yes (real-time)

2.3.4 Temperature compensation: Yes (real-time)

2.3.5 Can achieve synchronous detection of FID and MS without the need for repeated operation

2.4 Automatic Sample Injector

2.4.1 Number of available disk slots: 50 or more

2.4.2 Injection range: 0.1- μ L

2.4.3 Injection volume linearity: ≥ 99%

2.5 Hydrogen Flame Ionization Detector (FID)

2.5.1 Temperature range: up to 450 ℃ in 1 ℃ steps

2.5.2 Automatic fire extinguishing detection, automatic ignition, and automatic adjustment of ignition airflow

2.5.3 * Detection limit:<1.4 pg C/sec 2.5.4

Linear range:>107 2.5.5

Data collection frequency: 500Hz

2.6 Microelectronic Capture Detector (ECD)

2.6.1 * Operating temperature: 400 ℃

2.6.2 Radioactive source:<15 mCi63Ni foil

2.6.3 * Detection limit:<6fg/ml (benzene hexachloride)

2.6.4

Linear dynamic range:>5x105 (hexachlorobenzene)

2.6.5 Data Sampling Rate: 50Hz

2.7 Headspace sampler

2.7.1 111 injection positions

2.7.2

Sample repeatability: ≤ 1.5% RSD

2.7.3 The system adopts EPC electronic pressure control mode.

2.7.4 Pressure setting range: 0-75Psi, increments of 0.001Psi.

2.7.5 Flow rate setting range: 0-200mL/min, increments of 0.01ml/min.

2.7.6 Accuracy of pressure:<± 2%

2.7.7 Repeatability of pressure:<± 0.05Psi

2.7.8 Pressure drift:<± 0.1Psi/6 months

2.7.9 Flow velocity accuracy:<± 5%

2.7.10 Reproducibility of flow rate; <± 0.35% set value

2.7.11 To ensure after-sales quality, it is required to use the same brand as the gas chromatograph

2.8 Data Processing System

2.8.1 Full Chinese Workstation

2.8.2 Parameter input:instrumentSetting control parameters, data collection and calculation processing parameters;

2.8.3 Report: Built in multiple report formats, capable of automatically generating system adaptability reports, peak purity reports, spectral retrieval reports, etc;

Users can also edit personalized report templates;

2.8.4 Online Help and Tutorial: Each dialog box has online help to prompt users to set suitable parameters; Built in 30

More training courses are available for users to learn workstation operations independently;

2.8.5 Online Diagnosis: Equipped with multiple automatic testing programs for each component, users can check the performance of the instrument at any time based on its usage;

Built in multiple common chromatography problems and their solutions;

2.8.6 Early Maintenance Warning: Provide cumulative usage of consumable components for timely preventive maintenance of the system;

2.8.7 Electronic log: Real time recording of instrument usage and operation, and real-time access to instrument status.