Agilent Technologies 7820A

78 Advanced User Guide
5 Detectors
2 m × 0.2 mm capillary column If column flow is 0.75 mL/min,
the makeup must be at least 4.25 mL/min. Set it = 5. Reference
flow will then be 3 × 5.75 = 17.25 mL/min. Total detector flow =
5.75 + 17.25 = 22.5 mL/min.
25 m × 0.32 mm capillary column If column flow = 10 mL/min,
set makeup low to minimize sample dilution. Set it = 2 mL/min.
Reference flow will then be 12 × 2 = 24 mL/min. Total detector
flow = 12 + 24 = 36 mL/min.