Product Listing
Restek Corporation • (800) 356-1688 • (814) 353-1300 •
Figure 5
Analytical system designed to detect losses
from a 17ppbv standard.
1mL Sulfinert
™
sample loop
exit
orifice = 0.0060”
analytical column
SCD
Sulfinert™
sample cylinder
Sulfinert
™
valve
Rtx
®
-1CapillaryColumns (FusedSilica)
(Crossbond
®
100% dimethyl polysiloxane)
Themaximum temperatures listed are for 15- and 30-meter lengths.
Longer lengthsmay have a slightly reducedmaximum temperature.
R
t-XLSulfur
™
MicropackedColumns
Other column dimensions can be prepared on a custom basis. Please inquire.
Purchase installation kit separately.
ID
df (µm)
temp. limits
15m 30m 60m 75m 105m
0.32mm 3.00 -60 to 280/300°C 10181 10184 10187
10190
4.00 -60 to 280/300°C
10198
5.00 -60 to 260/280°C 10176 10178 10180
0.45mm 2.55 -60 to 270/290°C
10992
0.53mm 3.00 -60 to 270/290°C 10182 10185 10188
10189
5.00 -60 to 270/290°C 10177 10179 10183
10194
7.00 -60 to 240/260°C 10191 10192 10193
sulfur compounds.Alternatively, a 30-meter, 0.32mm ID, 4µm
Rtx
®
-1 column can be used to analyze highermolecular weight
sulfur compounds, such as thiophenes (Figure 2).
Another excellent approach for analyzing lowmolecular
weight sulfur compounds is the use ofmicropacked columns.
TheRt-XLSulfur
™
micropacked column contains a specially
deactivated divinylbenzene porous polymer in stainless steel
tubing, deactivated throughRestek’s state-of-the-art Sulfinert
™
passivation process. The inertness of both the packingmaterial
and the tubing ensure a column that is capable of analyzing
active sulfur compounds to 10ppb.Moreover, theRt-XLSulfur
™
micropacked column displaysminimal bleed, well within limits
necessary for ppb-level sulfur analysis, after a brief condition-
ing period (<30minutes). Themaximum temperature limit,
310°C, allows rapid elution of the highermolecular weight
analytes. This column achieves the critical separation of hydro-
gen sulfide (H
2
S), carbonyl sulfide (COS), and sulfur dioxide
(SO
2
), as defined in the International Society of Beverage
Technologists (ISBT) Procedure 14.0. Figure 3 shows the high-
ly volatileH
2
S andCOS separated using a 1-meter, 0.75mm ID
Rt-XLSulfur
™
micropacked column.Additionally, these volatile
sulfur compounds arewell-retained andwell-resolved from the
hydrocarbons that could interferewith quantification on some
sulfur-specific detectors (Figure 4).
Note that to achieve this high level of sensitivity, every compo-
nent of the sample pathwaymust be inert: the porous polymer,
the column tubing, the column end fittings, and, additionally,
the sample loop and/or inlet sleeve. Sample pathways in the
analyses shown in Figures 1 through 4were passivated using
Restek’s Sulfinert
™
deactivation process. Figure 5 shows a
schematic diagram of a system designed to analyze volatile and
reactive sulfur compounds. From the Sulfinert
™
-treated sample
cylinder used to collect and store the sample, to the Sulfinert
™
-
treated valve and sample loop used to transfer the sample to the
GC system, to either the inert capillary or packed column,
Restek offers a complete line of products to ensure consistent
and reliable analysis of sulfur compounds.
Formore information about the Sulfinert
™
passivation tech-
nique, request a copy of Restek’s brochure on Sulfinert
™
coat-
ings (Lit. cat.# 59203).
*0.020" wall thickness
Sulfinert
™
Welded 304Grade Stainless SteelTubing
Available in lengths from 5—400 feet. Call for details.
**0.035" wall thickness
Sulfinert
™
Seamless 316Grade Stainless SteelTubing
Available in lengths from 5—400 feet. Call for details.
ID
OD
cat.#
0.055" (1.40mm)
1
/
8
" (3.18mm)**
22508
0.180" (4.57mm)
1
/
4
" (6.35mm)**
22509
OD
ID (mm)
1-Meter
2-Meter
1
/
16
”
1.0mm
19804
19805
0.95mm
0.75mm
19806
19807
for 0.75mm ID col.
for 1mm ID col.
for 2mm ID col.
For valve applications
21062
21065
21067
For split applications
21063
—
—
For all Agilent GCs
21064
—
—
For direct injections
—
21066
—
InstallationKits
ID
OD
cat.#
0.011” (0.28mm)
0.022” (0.56mm)
22500
0.021” (0.53mm)
0.029” (0.74mm)
22501
0.010” (0.25mm)
1
/
16
” (1.59mm)
22502
0.020” (0.51mm)
1
/
16
” (1.59mm)
22503
0.030” (0.76mm)
1
/
16
” (1.59mm)
22504
0.040” (1.02mm)
1
/
16
” (1.59mm)
22505
0.085” (2.16mm)
1
/
8
” (3.18mm)*
22506
0.210” (5.33mm)
1
/
4
” (6.35mm)*
22507
Sulfinert
™
-TreatedSampleCylinders
• Sizes from 75cc to 2250cc.
• Durable 316 stainless steel.
• 1/4-inch femaleNPT threaded ends.
• D.O.T. rated to 1800psi at room temperature.
Size
qty.
cat.#
75cc
ea.
24130
150cc
ea.
24131
300cc
ea.
24132
500cc
ea.
24133
1000cc
ea.
24134
2250cc
ea.
21394
