User guide

106 Advanced User Guide
5 Methods and Sequences
Creating Methods
A method is the group of setpoints needed to run a single
sample on the GC, such as oven temperature programs,
pressure programs, inlet temperatures, sampler parameters,
etc. A method is created by saving a group of setpoints as a
numbered method using the [Store] key. At least 10 methods can
be stored.
Components for which setpoint parameters can be stored are
shown in Table 21.
Table 22 lists the setpoint parameters for the 7683B ALS.
Table 21 Setpoint parameter components
Component Component
Oven Aux temp
Valve 1–8 Aux EPC
Front and back inlet Aux column
Columns 1 to 6 Aux detector 1 and 2
Front and back detector Post run
Analog 1 and 2 Run table
Front and back injector (see Table 22) Sample tray
Table 22 7683B ALS setpoint parameters
Parameter Parameter
Injection volume Sample Draw Speed
Viscosity delay Sample Disp Speed
Inject Dispense Speed Solvent Draw Speed
Sample pumps Solvent Disp Speed
Sample washes Slow plunger
Solvent A post washes Pre dwell time
Solvent A pre washes Post dwell time
Solvent B post washes Sample offset
Solvent B pre washes Injection Reps
Solvent B wash volume Injection Delay