Key facts
- Brand
- Agilent
- Model
- CP-4900
- Industry
- Industrial
- Documents
- 5
- Languages
- EN · FR
- Last added
- 2012-07-05
Start here
Agilent CP-4900 Micro-GC Fast Analysis of Low Level BTEX Manual
This document details a method for improving the detection limits of the Varian CP-4900 Micro-GC (now Agilent) by using the Enrichment and Desorption Unit (EDU) Sample Concentrator. The system adsorbs analytes onto a Tenax porous medium before desorbing and transferring them to the Micro-GC for separation and analysis.
Read onlineAgilent CP-4900 specifications
| Carrier gas | Helium, 150 kPa |
|---|---|
| Column temperature | 100 °C |
| Injector time | 255 ms |
| Flow mode | Continuous |
| Transfer gas | Helium 85 kPa |
| Sampling time | 60 sec 30°C |
| Desorption phase | 120 sec 180 °C |
| Injection phase | 30 sec 180 °C |
| Clean phase | 90 sec 220°C |
| Cool phase | 100 sec |
Source: Agilent CP-4900 Micro-GC Fast Analysis of Low Level BTEX Manual
All Agilent CP-4900 documents by type
Mounting, wiring and first power-up. Read it before the hardware goes in.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the typical detection limit of the CP-4900 Micro-GC without concentration?
The typical detection limit is approximately 1-10 ppm, depending on the compound.
From: Agilent CP-4900 Micro-GC Fast Analysis of Low Level BTEX Manual
How much can the detection limit be improved using the Sample Concentrator?
The detection limit can be improved from 1 ppm to 5 ppb for several aromatic compounds.
From: Agilent CP-4900 Micro-GC Fast Analysis of Low Level BTEX Manual
What are the application areas for these GC solutions?
Application areas include catalyst research and screening, fuel cell development, gas to liquid monitoring, biomass conversion, and synthetic natural gas.
From: Agilent CP-4900/450-GC Gas Chromatograph Custom Solutions Brochure
What options are available for the CP-4900 Micro GC?
Options include backflush to protect columns, a gassifier for high pressure samples, and a Genie Filter for moisture removal.
From: Agilent CP-4900/450-GC Gas Chromatograph Custom Solutions Brochure
What is the correlation coefficient for sample concentration linearity?
The linear behavior of sample concentration demonstrated a correlation coefficient of 0.9979 when increasing sampling time.
From: Varian CP-4900 DMD Micro-GC Application Note for Dichloroethane Analysis
What is the repeatability of the system at low concentrations?
The results of 14 consecutive runs remain within a 10% RSD (Relative Standard Deviation).
From: Varian CP-4900 DMD Micro-GC Application Note for Dichloroethane Analysis