GuardColumns2012 - page 15

www.restek.com 289
GC ACCESSORIES | COLUMN INSTALLATION
Connectors
Vu2 Union® Connectors
• Connect a guard column to an
analytical column.
• Connect a column to a transfer line.
• Connect two columns in series.
• Repair a broken column.
• Fit both Restek cage designs.
Restek’s Vu2 Union® connector combines
the simplicity of a Press-Tight® union
with the strength of a metal union.
How does a Vu2 Union® connector work?
A Press-Tight® union in the Vu2 Union® connector joins the fused silica ends together;
the ferrule and knurled nut at each end of the connector hold the tubing in place via a
secondary seal between the ferrule and the Press-Tight® union. Each knurled nut
applies independent pressure to each ferrule, to make a leak-tight seal with the column
end. These ultra-strong connections will not unexpectedly disconnect under tempera-
ture changes, vibrations, or other stresses normally encountered in GC analyses. The
open design allows visual confirmation of the seal between the column and the Press-
Tight® union, to ensure confidence in the connection. Hang the connector from the
column cage, to minimize stress on the connections.
Who will benefit from using Vu2 Union® connectors?
Any analyst using guard columns, transfer lines, or restrictor tubing, performing a dual-
column analysis with columns connected in series, or seeking to repair a broken column
will find Vu2 Union® connectors the simple, reliable, easy-to-use solution to their
connection needs.
Kits include: Vu2 Union® body, 2 knurled nuts, 2 Press-Tight® unions, and 4 ferrules
A guard column connected to an analytical
column by a Vu2 Union® connector.
The Vu2 Union® connector’s open
design allows visual confirmation
of the seal; secondary seals ensure
a leak-tight connection.
hanger
knurled nut
body
Press-Tight ® connector ferrule
fused silica column,
guard column,
or transfer line
Universal Press-Tight® Connectors
injector
guard
column
detector
analytical
column
Vu2 Union ®
connector
Patent pending.
NOTE: This product is not recommended for
GC column-to-MS connections—use the
Vacuum Vu-Union®. See page 291.
Secure, reliable
column-to-column
connections!
20480
20400
Fit both Restek cage designs.
Description Ferrules Fit Column ID qty. cat.# price
Vu2 Union Connector Kit 0.10/0.15mm kit 22220
Vu2 Union Connector Kit 0.18/0.28mm kit 21105
Vu2 Union Connector Kit 0.32mm kit 21106
Vu2 Union Connector Kit 0.45/0.53mm kit 21107
Knurled nut 2-pk. 21108
Description 5-pk./price 25-pk. /price 100-pk./price
Universal Press-Tight Connectors 20400 $49.50 20401 $198 20402
Universal Press-Tight Connectors, Deactivated 20429 $57.50 20430 $228
Universal Press-Tight Connectors, Siltek Treated 20480 $62 20449 $259
Ferrule ID Fits Column ID Graphite 2-pk./price Graphite 10-pk./price
0.3mm 0.10/0.15mm 22221 $23 22222
0.4mm 0.18/0.28mm 20280 $23 20281
0.5mm 0.32mm 20282 $23 20283
0.8mm 0.45/0.53mm 20284 $23 20285
Graphite Ferrules
for Vu2 Union® Connectors
• High-purity, high-density graphite.
• Stable to 450 °C.
• No binders that can off-gas or adsorb analytes.
• Smooth surface and clean edges.
Website :www.chromtech.net.auE-mail :info@chromtech.net.auTelNo : 03 9762 2034 . . . in AUSTRALIA Mar 2011