Ignitable Liquids Database
Substrate Database
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Instrument and accessories

Agilent (Hewlett-Packard) 6890 gas chromatograph and 5973 mass spectrometer

Agilent ALS autosampler G2614A

GC conditions

Column: HP-1 or equivalent

Length: 25 meters

Inner diameter: 0.20mm

Film thickness: 0.5 microns

Carrier gas: Helium (high purity grade)

Constant flow

Flow rate: 0.8 ml/min.

Linear velocity: approximately 36 cm/sec

Split ratio: 50/1

Injection volume: 1 microliter

Pre injection washes of sample: 2

Pumps: 2

Post injection wash of solvent A: 10

Post injection wash of solvent B: 10

Fast plunger

Merlin microseal

Injection temperature: 250 degrees C

Initial temperature: 50 degrees C

Initial hold time: 3 min

Rate: 10 degrees C/min

Final temperature: 280 degrees C

Final hold time: 4 min

Total run time: 30 min

MS conditions        

Transfer line temperature: 280 degrees C

Acquisition mode: scan

Scan range: 30-350

Scan rate: 2-3 scans/sec; equivalent to 6-10 scans per peak

Solvent delay: 2 min

As of November 2010: no solvent delay, however the detector is off between 1.54 and 2.00 minutes

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