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Agilent 7890A

Analytical laboratory / Chemical analysis / Thermal desorption system-gas Chromatograph - mass spectometer (TD/GC/MS)

Agilent 7890A

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Purpose :

Gas chromatography (GC), is a common type of chromatography used in analytical chemistry for separating and analyzing the volatils organics compounds that was desorbed by TD.


Unity 2 is a cryogen-free 2 stage manual thermal desorber for tagged or untagged tubes

Used for sampling, concentrating, extracting and analysing volatile and semi-volatile

Temperature range 35˚C to 425 ˚C in 1˚C increment

Desorption time 0 to 999 minutes settable in 0.1 min increment

Low temperature range -30 ˚C to 50 ˚C in 1˚C increment

Heating rate default setting 100 ˚C/sec

Alternate heating rate 1˚C/sec to 40 ˚C/sec

GC column oven accommodate HP5-MS 30m x 0.25 x 0.25µm

GC operating temperature range +4˚C to 450 ˚C

Temperature set point resolution 0.1 ˚C

Supports 20 oven ramps with 21 plateaus, negative ramps allowed

Maximum ramp rate 120 ˚C/min

Pressure range 0 to 100 psi

Pressure increment +/-0.001 psi

Pressure sensor accuracy ≤ +/-2% full scale

Flow sensor accuracy ≤ +/- 5% depending on carrier gas

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