Agilent Technologies 7890B User Manual

Chromatographic Checkout 6
Operation Manual 73
• If the baseline output is > 1000 Hz, there may be
chemical contamination contributing to the signal.
Bakeout the uECD. If repeated cleanings do not give an
acceptable signal, check gas purity. Use higher purity
gases and/or install traps.
6 Create or load a method with the parameter values listed
in Table 7.
Table 7 uECD Checkout Conditions
Column and sample
Type HP-5, 30 m × 0.32 mm × 0.25 µm
(19091J-413
Sample µECD checkout (18713-60040 or
Japan: 5183-0379)
Column mode Constant flow
Column flow 6.5 mL/min (helium)
Split/splitless inlet
Temperature 200 °C
Mode Splitless
Purge flow 60 mL/min
Purge time 0.75 min
Septum purge 3 mL/min
Multimode inlet
Mode Splitless
Inlet temperature 80 °C
Initial time 0.1 min
Rate 1 720 °C/min
Final temp 1 250 °C
Final time 1 5 min
Purge time 1.0 min
Purge flow 60 mL/min
Septum purge 3 mL/min
Packed column inlet
Temperature 200 °C
Septum purge 3 mL/min

Agilent Technologies 7890B Specifications

General

Brand	Agilent Technologies
Model	7890B
Category	Laboratory Equipment
Language	English