Thermo Scientific FOCUS GC, Instruction Manual

Page: 232 / 356

Chapter 13
SOP number: P0473/04/E - 02 May 2007
232 Instruction Manual
• Connecting to a TCD Detector
9. Leak Test
This operation should be performed on the system each time the column
installation is disturbed, to ensure a good seal throughout the system. Perform the
leak test following the instruction reported in the
Performing an Automatic Leak
Check operating sequence.
Parts Referenced
Table 13-1. TCD-S/SL Parts Referenced
Part Description Part Number
Test Column Fused Silica Capillary Column TR-5; 7 mt long
0.32 mm ID; 0.25
μ
m film thickness.
260 800 01
Glass Liner 3 mm ID for splitless injection 453 200 32
Liner Seal Graphite seal for glass liner 290 334 06
Graphite Ferrule Graphite ferrule for 0.32 mm ID Column 290 134 87
Septum Standard septum for S/SL injector 313 032 11
Syringe 10
μ
l size; 50 mm needle length 365 001 03
Test Mixture Three components in n-Hexane:
Component Concentration
Dodecane 200
μ
g/ml
Tetradecane 200
μ
g/ml
Hexadecane 200
μ
g/ml
338 190 16
Gases Chromatographic-grade purity
Data Acquisition Chrom-Card, ChromQuest, Computing-integrator