WhatSeptumConfigurationsareAvailable, and forWhichGCs?
Restekhas fashioned septa for allmajor brands of gas chromatographs and injectors.Use the sep-
tum size chart todetermine the septumdiameter for your instrument, ormeasure anold septum
if yourmodel is not listed.
WhichSeptaShould IUse?
Thermolite® septa are aproven low-bleed champion.With amaximum temperature of 340°C,
there are very few applications forwhichThermolite® septa arenot suitable.
IceBlue™ septa are ideal for analysts using inlet temperatures of 250°Cor below, or using solid
phasemicroextraction (SPME) sampling techniques. IceBlue™ septawill accommodate punctur-
ing from the largeneedles used in SPME, and still assure consistent injections and long lifetime.
BTO® septa are bleed and temperature optimizedwith amaximum temperature of 400°C, for
themost demandingGC andGC/MS applications. They retain remarkable softness and
puncturability at high temperatures.TheCenterGuide™ canhelp reduce coringwhenused
with tapered (rounded-tip) needles.
BTO®Septa
Usable to400°C
Thermolite®Septa
Usable to340°C
IceBlue®Septa
Usable to250°C
septumsize
chart
HANDY
Septum
Diameter
Instrument
(mm)
Agilent (HP)
5880A, 5890, 6890,
6850, PTV
11
5700, 5880
9.5/10
On-Column Injection
5
CE Instruments (TMQ)
TRACE
™
GC
17
Finnigan (TMQ)
GC 9001
9.5
GCQ
9.5
GCQw/TRACE
™
, PTV
17
QCQ
™
9.5
TRACE
™
2000
9.5
Fisons/Carlo Erba (TMQ)
8000 series
17
Gow-Mac
6890 series
11
All othermodels
9.5
PerkinElmer
Sigma series
11
900,990
11
8000 series
11
Auto SYS
™
11
Auto SYS
™
XL
11
Pye/Unicam
All models
7
Shimadzu
All models
Plug
SRI
All models
Plug
Tracor
540
11.5
550,560
9.5
220,222
12.5
Varian
Injector type:
Packed column
9.5/10
Split/splitless
1078/1079
10/11
1177
9
1075/1077
11
