Agilent Technologies 6850 Series II User Manual

Verifying Performance
µECD Checkout
Released: March 2004 6850 Series II GC User Information page 70 of 256
Offset checkout
Display the signal output to determine background offset. A stable offset value
less than 1000 display units (inclusive) is acceptable.
• If the offset is < 0.5 display units, verify that the electrometer is on. If the
offset is still < 0.5 display units, your detector requires service.
• If offset is > 1000 display units, there may be chemical contamination
contributing to the signal. Perform a thermal cleanout (see “Thermal
cleaning” on page 207 for details). If bakeout does not give an acceptable
signal, check gas purity. Use higher purity gases and/or install traps.
Rate 2 100°C/min
Final temp 2 250°C
Final time 2 0 min
Purge time 0.75 min
Purge flow 60 mL/min
Detector
Temperature 300°C
Anode purge flow (N
2
) 60 mL/min
Makeup flow (N
2
)25±2mL/min
Offset Should be < 1000 display counts
Oven
Initial temp 80°C
Initial time 0 min
Rate 1 15°C/min
Final temp 180°C
Final time 10 min
Table 19. µECD Checkout Conditions (Method ECDCKO)

Agilent Technologies 6850 Series II Specifications

General

Brand	Agilent Technologies
Model	6850 Series II
Category	Laboratory Equipment
Language	English