CLINICAL/FORENSICS
30
Capillary GC Columns: Guard Columns
FusedSilica
Base-DeactivatedGuardColumns
• Excellent inertness for basic compounds.
• Recommended for usewithRtx®-5Amine,Rtx®-35Amine, andStabilwax®-DB capillary columns.
• Testedwithbasic amine testmix.
• Batch test chromatogram included.
• Maximum temperature: 315°C.
Chemists using guard columns in analyses of basic compounds frequently observe peak tailing and
low recovery, because conventionally deactivated tubing surfaces can be adsorptive to basic com-
pounds. Restek offers both base-deactivated columns and base-deactivated guard columns for com-
pletely inert sample pathways.
Nominal ID
Nominal OD
5-Meter
5-Meter/6-pk.
0.25mm
0.37± 0.04mm
10000
$45
10000-600
$230
0.32mm
0.45± 0.04mm
10001
$50
10001-600
$255
0.53mm
0.69± 0.05mm
10002
$65
10002-600
$330
Integra-Guard
™
Columns:
guard columnsWITHOUT
connections—protecting your
analytical column has never
been this easy!
restek
innovation
!
*Price of the guard column, to be added to the
price of the column.
Innovative Integra-Guard™Columns
For analystswho find it inconvenient tomake a leak-free connectionbetween the guard column and
the analytical column,Restekoffers Integra-Guard™ columns.These innovative columns incorporate
both guard column and analytical column in a continuous lengthof tubing, eliminating the connec-
tion and all connection-associated problems! The guard column section is tied separately from the
analytical column, using high-temperature string. The column is suspended in our unique “crush-
free”cage,whichprotects the column fromdamage.
Restek offers a wide variety of Integra-Guard™ capillary columns, listed in the figure below. The
Integra-Guard™ column is so economical thatwe challenge you to compare our price against that of
aconventional connection, even if youassemble it yourself. If youarecurrentlyusingaguardcolumn,
or are consideringusingone, call today and ask about Integra-Guard™ columns.
Ordering is simple. Just add the appropriate suf-
fix number and price to the analytical column’s
catalog number and price. For example, a 30m,
0.25mm ID, 0.25µm Rtx®-5 column with a 5-
meter Integra-Guard™ column is cat.# 10223-
124.
ID
Lengt
h
Suffix
#
Additional
cost*
0.25mm
5m
-124
$45
10m
-127
$55
0.32mm
5m
-125
$50
10m
-128
$60
0.53mm
5m
-126
$60
10m
-129
$75
FusedSilica
Siltek®-DeactivatedGuardColumns/TransferLines
• Revolutionarydeactivationprocess for superior inertness.
• Minimize bleed.
• Analyze active samples accurately; ideal for chlorinatedpesticide analysis (reduces endrin
breakdown to less than1%).
• Maximum temperature: 380°C.
Nominal ID
Nominal OD
5-Meter
10-Meter
0.25mm
0.37± 0.04mm
10026
$50
10036
$95
0.32mm
0.45± 0.04mm
10027
$55
10037
$105
0.53mm
0.69± 0.05mm
10028
$75
10038
$145
Rtx
®
-1
Rtx
®
-1MS
Rtx
®
-5
Rtx
®
-5MS
Rtx
®
-5Sil MS
XTI
®
-5
Rtx
®
-1301
Rtx
®
-624
Rtx
®
-1701
Rtx
®
-Volatiles
Rtx
®
-20
Rtx
®
-35
Rtx
®
-35MS
Rtx
®
-BAC 1& 2
Stabilwax
®
Phasescurrentlyavailableas
Integra-Guard™columns
Integra-Guard™built-
inguard column
Available for all phases listed, for columnswith
0.25 to 0.53mm ID and lengths to 75meters.
