Septum; Liners - Thermo Scientific FOCUS GC Instruction Manual

S/SL Overview

Septum

Standard Septum
You should always use good quality septa, such as the BTO septa supplied with
the FOCUS GC. Such septa resist deformation, have longer life expectancy, and
have a low bleed level, even at high temperatures.
Microseal™ Valve
S/SL injector is compatible to use Merlin Microseal™ High Pressure Valve
instead of the standard septa.
NOTE To install the Microseal™ Valve, the relevant installation kit is required.
High pressure capability allows operation from 15 to 700 kPa (2-100 psi). Longer
life reduces the changes of septum leaks occurring during extended automated
runs. Microseal™ valve requires a 0.63 mm diameter (0.025-inch) blunt tip
syringe.

Liners

You may choose amomg different types of glass liners depending on the injection
mode used. Table 5-1 shows the liner options.
Instruction Manual
ID mm OD mm
5 8 split injection
3 8 split injection
3 8 splitless injection
5 8 splitless injection
5 8 direct injection into a wide-bore column
5 8 split injection at high flow rates or for very polar solvents
Table 5-1. Liner Sizes and Applications
Split/Splitless Injector (S/SL)
Application
Chapter 5
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