TABLE OF CONTENTS - BGB Analytik AG

Ferrule Selection Recommendations
www.agilent.com/chem/supplies
Capillary Column Ferrules and Nuts
Ferrule/ Seal Type Upper Temp. Limit Usages Advantages Limitations
Graphite (100%) 450°C General purpose
for capillary columns.
Suitable for FID
and NPD.
Recommended
for high temperature
and cool on-column
applications.
Vespel/Graphite
350°C General purpose
(85%/15%)
for capillary columns.
Recommended
for MS and oxygen
sensitive detectors.
Most reliable
leak-free connection.
Vespel (100%) 280°C Isothermal operation.
Can be reused
or removed easily.
Excellent sealing
material when
making metal
or glass connections.
Tips & Tools
Agilent LTM technology combines
a fused silica capillary column
with heating and temperature
sensing components wound
around it. The design heats and
cools the column very efficiently
for significantly shorter analytical
cycle times.
Turn to pages 308–332.
Easy to use
stable seal.
Higher
temperature limit.
Can be
removed easily.
Mechanically robust.
Long lifetime.
Mechanically robust.
Long lifetime.
Can be reused
or removed easily.
Not for MS or oxygen
sensitive detectors.
Soft, easily deformed
or destroyed.
Possible system
contamination.
Not reusable.
Flows at elevated
temperature.
Must re-tighten
frequently.
Leaks after temperature
cycle.
Flows at elevated
temperature.
Must re-tighten
frequently.
Ferrules for LTM Rapid Heating/Cooling System
Description Unit Part No.
For use with 0.25 - 0.4 mm ID LTM columns 5/pk 5190-1437
For use with 0.4 - 0.5 mm ID LTM columns 5/pk 5190-1438
For use with 0.5 - 0.8 mm ID LTM columns 5/pk 5190-1439
GC and GC/MS
159