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GC ACCESSORIES | INSTRUMENT SUPPLIES
Connectors
tech tip
Coupling GC Columns
An MXT® connector is a good alternative to a glass connector when
coupling GC columns. This connector is constructed from stainless steel
and will not break; it uses ferrules for sealing. The design ensures low
dead volume, and Siltek® treatment ensures the MXT® connector is inert;
both features help minimize peak tailing. MXT® connectors can be used
to connect metal-to-metal, metal-to-fused silica, or fused silica-to-fused
silica tubing. When connecting metal tubing, use 1/32-inch stainless steel
ferrules (see ); for fused silica tubing, use Valcon polyimide
adaptor ferrules (see above).
MXT®-Union Connector Kits
for Connecting Metal and/or Fused Silica GC Columns
Each kit contains the MXT® union; two 1/32-inch nuts; and two,
one-piece, fused silica adaptors.
MXT®-Union Connector Kits for Connecting
Metal and/or Fused Silica GC Columns
• Low dead volume, leak-tight connection.
• Reusable.
• Siltek® treatment ensures maximum inertness.
• Ideal for connecting a guard column or transfer line to an
analytical column.
• Use to oven temperatures of 350 °C.
• Available in union and “Y” configurations.
• Can also be used for connecting fused silica to metal.
These MXT® connectors can be used with fused silica tubing
because of a Valcon polyimide, 1 /32-inch, one-piece fused silica
adaptor. This unique graphite-reinforced composite allows a
capillary column to slide into the adaptor and be locked in place
simply by loosening and tightening the fitting.
Description qty. cat.# price
For 0.25 mm ID Fused Silica Columns kit 21386
For 0.32 mm ID Fused Silica Columns kit 21385
For 0.53 mm ID Fused Silica Columns kit 21384
1/ 32-Inch Valco® Adaptor Ferrules (Valcon Polyimide)
Fused silica adaptor ferrules are made from Valcon polyimide,
a unique, graphite-reinforced composite specially prepared to
maximize mechanical stability at temperatures up to 350 °C.
The determining factor for selecting adaptor ferrule size is the
fused silica tubing OD.
20140
20141
20389
Tubing OD Tubing ID Valco # qty. cat.# price
0.25–0.40 mm 0.25 mm FS.4-5 5-pk. 20137
0.40–0.50 mm 0.32 mm FS.5-5 5-pk. 20140
0.50–0.80 mm 0.53 mm ZF.5V-5 5-pk. 20141
1/32" Replacement Nut 5-pk. 20389
MXT® “Y”-Union Connector Kits
for Connecting Metal and/or Fused Silica GC Columns
Each kit contains the MXT® union; three 1/32-inch nuts; and
three, one-piece, fused silica adaptors.
Description qty. cat.# price
For 0.25 mm ID Columns kit 21389
For 0.32 mm ID Columns kit 21388
For 0.53 mm ID Columns kit 21387
Ferrule Removal Kit
The tapered tools in this kit have teeth designed to grip and
remove fused silica adaptor ferrules that have become stuck in
the fitting detail. Each kit has two tools: one for removing 1/32-
inch adaptor ferrules and one for removing 1/16-inch adaptor
ferrules.
Description Valco # qty. cat.# price
Ferrule Removal Kit FRK1 kit 20146
20146