Thermo Scientific FOCUS GC, Инструкция по эксплуатации

Страница: 192 / 356

Chapter 10
Autosamplers
AS 2000 Autosampler Menu
192 Instruction Manual
When you scroll to
Int Std Settings
in the
AUTOSAMPLER
menu and press
ENTER
, the
INTERNAL STANDARD
menu is displayed:
Internal Standard Use
When you use an internal standard method with the autosampler, you specify a
position in the autosampler tray for a vial of internal standard solution. The
autosampler then loads a specified volume of the internal standard solution in the
syringe before it loads a sample. You can also use the internal standard settings to
specify a solvent for a solvent flush injection technique. In this case, a solvent
takes the place of the internal standard solution. You can specify an air gap in the
syringe between the internal standard solution or the solvent and the sample. This
is the Post air gap mode. To have an air gap both before and
after the internal standard solution or solvent, choose the Double air gap mode.
INT STD SETTINGS
Int std vial# 20
Int std volume 2.0
Air gap mode double
Air gap volume
Table 10-2. Internal Standard Menu
Parameter Range Description
INT STD SETTINGS
This line is the title bar
Int std vial#
The tray position of the internal standard vial.
Int std volume
The volume of internal standard or solvent loaded into
the syringe.
Air gap mode
Post , double Select
post
for a single air gap after the internal
standard solution or solvent. Select
double
for an air
gap before and after.
Air gap volume
0.0–99.9,
100–500 µl The volume of the air between solvent, sample and
internal standard for a solvent flush injection.