234
GC ACCESSORIES |
INSTRUMENT SUPPLIES
Suppl ies for Agi lent GCs : GC/MS
Figure 2
Sharp, symmetric peaks for gases show the EZ No-Vent®
connector does not add dead volume and allows rapid column
changes.
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
min.
2
1
3
4
5
6
7
1st Column, Equilibrated System
1. dichlorodifluoromethane
2. 1,2-dichlorotetrafluoroethene (Freon
®
114)
3. chloromethane
4. vinyl chloride
5. bromomethane
6. chloroethane
7. trichlorofluoromethane
Rtx
®
-624, 60m, 0.25mm ID, 1.4µm (cat# 10969),
column direct to source.
Acquired 76 minutes after installing 2nd column
Rtx
®
-624, 60m, 0.25mm ID, 1.4µm (cat# 10969)
using EZ No-Vent
®
connector.
Sample:
Volatile Gas Mix 502.2
Calibration Mix#1 (gases)
cat# 30042
Inj.:
Purge & Trap
GC
Agilent 6890
Inj. temp.:
300°C
Carrier gas: helium, constant flow
Flow rate:
1.0mL/min.
Oven temp.:
60°C isothermal
Det:
Agilent 5973 GC/MS
Transfer line temp.: 280°C
Scan range:
35-550amu
Tune
BFB
Ionization:
EI
GC_EV00659a
GC_EV00659b
EZ No-Vent® GC Column-Mass Spectrometer Connector
for Agilent GCs with 5971/5972, 5973, or 5975 GC/MS
• Change GC/MS columns in minutes without venting—
100 µm transfer line throttles vacuum and eliminates the
need to vent.
• Easy to install and maintain—no special tools or plumbing
required.
• Gold-plated body for inertness.
• Deactivated transfer line keeps analytes focused.
• High-temperature polyimide ferrules eliminate leaks at the
problematic transfer line fitting.
• Lower cost than other “no-vent” fittings.
We designed the EZ No-Vent® GC column-mass spectrometer
connector to be simple and easy to use. A critical orifice in the EZ
No-Vent® connector minimizes the amount of oxygen allowed
into the MS source, eliminating the need for purge gas as is
required for other manufacturer’s vent systems. This enables you
to skip the lengthy vent and pump-down cycle otherwise
required when you make a column change. This can save nearly
a day of down-time with each column change. The EZ No-Vent®
connector easily attaches to the MS source without special tools
or extra plumbing. Figure 1 shows the internal structure of the
connector. Figure 2 illustrates the high performance achieved
with the EZ No-Vent® Connector.
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
min.
4
5
6
1
2
3
7
Change columns in
minutes—without
venting!
GC/MS
Interface
Transfer
Line
Ferrule
EZ No-Vent
®
Connector
Capillary
Ferrule
Capillary
Column
Transfer
Line
Capillary
Nut
Kit installs easily,
without special
tools or plumbing.
Laser drilled
to 100 μm ID
Figure 1
The EZ No-Vent®
connector incorporates a laser
machined orifice for optimal
flow through the fitting.
Coupled with the 100 μm ID
transfer line, it minimizes the
amount of oxygen entering
the MS, which eliminates the
need for purge gases as in
other manufacturer's systems.
restek
innovation
!
Description
qty.
cat.#
price
EZ No-Vent Connector Kit
includes: EZ No-Vent Connector, two 0.4mm ID
adaptor ferrules for capillary column, two 0.4mm ID
ferrules for transfer line, 100µm deactivated transfer
line (3 ft.), column plug, column nut
kit
21323
Replacement ferrules for connecting capillary column
to EZ No-Vent Connector:
0.4mm ID (Polyimide)
2-pk.
21015
0.5mm ID (Polyimide)
2-pk.
21016
Replacement ferrules for connecting transfer line to
EZ No-Vent Connector: 0.4mm ID
2-pk.
21043
Replacement 100µm deactivated transfer line
3 ft.
21018
Replacement EZ No-Vent Column Nut
20-pk.
23100
Replacement EZ No-Vent Plug
5-pk.
23112
Open-End Wrenches,
1
/
4
" x
5
/
16
"
2-pk.
20110
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
