ADV01-05_1-298

235 / 298

w/data pack
w/data pack
• 9 •
2003 Volume 3
800-356-1688
acenaphthene
acenaphthylene
anthracene
benzo(a)anthracene
benzo(a)pyrene
benzo(b)fluoranthene
benzo(ghi)perylene
benzo(k)fluoranthene
benzyl butyl phthalate
bis(2-chloroethoxy)methane
bis(2-chloroethyl)ether
bis(2-chloroisopropyl)ether
bis(2-ethylhexyl)phthalate
4-bromophenyl phenyl ether
4-chloro-3-methylphenol
2-chloronaphthalene
4-chlororphenyl phenyl ether
2-chlorophenol
chrysene
dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
2,4-dichlorophenol
diethylphthalate
2,4-dimethylphenol
dimethylphthalate
di-n-butylphthalate
4,6-dinitro-2-methylphenol
2,4-dinitrophenol
2,4-dinitrotoluene
2,6-dinitrotoluene
di-n-octylphthalate
diphenylamine*
fluoranthene
fluorene
hexachlorobenzene
hexachloro-1,3-butadiene
hexachlorocyclopentadiene*
hexachloroethane
indeno(1,2,3-cd)pyrene
isophorone
naphthalene
nitrobenzene
2-nitrophenol
4-nitrophenol
N-nitrosodimethylamine*
N-nitroso-di-n-propylamine
pentachlorophenol
phenanthrene
phenol
pyrene
1,2,4-trichlorobenzene
2,4,6-trichlorophenol
*Listed as an “additional” compound in Method 625
(diphenylamine is included in this mix in place of
unstable N-nitrosodiphenylamine). The six other
“additional” compounds are components in other
Restek reference mixes used for Method 625: benzi-
dine is included in cat.# 31030; β-BHC, δ-BHC,
endosulfan I, endosulfan II, endrin are in cat.# 32291.
Semivolatiles MegaMix™, EPA Method 625
(54 components)
1,000µg/mL each in methylene chloride:benzene (75:25),
1mL/ampul
Each 5-pk. 10-pk.
31829 31829-510 —
w/data pack
31829-500 31829-520 31929
Rtx®-5Sil MS Columns:
Ideal for Semivolatiles Extracts!
✔ Excellent low bleed column for semivolatile pollutants, pesticides, PCBs, other environmental applications.
✔ Thermally stable to 350ºC.
✔ Silarylene phase with polarity similar to 5% diphenyl/95% dimethyl polysiloxane.
acenaphthene-d10
chrysene-d12
1,4-dichlorobenzene-d4
naphthalene-d8
perylene-d12
phenanthrene-d10
SV Internal Standard Mix
**Requires special handling (warming and sonication) before use.
Let us create the right solution for you!
We can make CUSTOM MIXTURES
to meet your specific compound lists.
Call us at 800-356-1688 or 814-353-1300 or
use the Custom Reference Materials Request
Form on our website:
Each 5-pk. 10-pk.
2,000µg/mL each in methylene chloride, 1mL/ampul
31206 31206-510 —
31206-500 31206-520 31306
4,000µg/mL each in methylene chloride, 1mL/ampul**
31006 31006-510 —
31006-500 31006-520 31106
Rtx®-5Sil MS Column (fused silica)
(Selectivity similar to Crossbond® 5% diphenyl/95%
dimethyl polysiloxane)
ID df (µm) temp. limits
0.25mm 0.25 -60 to 330/350°C 12723
30-Meter
Rtx®-5Sil MS columns are especially well suited for
Method 625. Extracts of environmental samples ana-
lyzed using this method commonly contain high
molecular weight contaminants, and high bake-out
temperatures are needed to remove these from the
column. The Rtx®-5Sil MS stationary phase and the
proprietary deactivation used to prepare these
columns can reliably withstand sustained tempera-
tures of 330ºC, and will not exhibit the activity that
often is caused by subjecting a column to these con-
ditions. Analysts using Rtx®-5Sil MS columns can
program their GCs to 350ºC for especially persistent
contamination. Figure 1 shows Restek analytical ref-
erence materials analyzed on an Rtx®-5Sil MS col-
umn programmed to 330ºC. Bleed is negligible, rela-
tive to the 10ng on-column concentration of the tar-
get analytes, such as benzo(ghi)perylene.
To obtain Figure 1, conditions were optimized to
achieve the fastest analysis without sacrificing resolu-
tion of analytes that share quantification ions, such as
benzo(b)fluoranthene and benzo(k)fluoranthene
(peaks 55 & 56). Steps were taken to focus N-
nitrosodimethylamine. To minimize tailing, the
pulsed-splitless hold-time was reduced to 0.3 min-
utes to reduce the time the analytes spend in the
injection port. This step also sends a higher percent-
age of solvent to the split vent, allowing resolution of
the amine from the solvent. The initial temperature,
35ºC, allows better analyte focus at the column inlet.
The pulsed pressure was reduced from 30psi to
20psi to allow even transfer of N-nitrosodimethy-
lamine to the column. Finally, the flow rate was
reduced from 1.1mL/min. to 1.0mL/min. Analytes
present at higher concentrations will exhibit less tail-
ing at the lower rate.
benzidine 3,3'-dichlorobenzidine
605 Benzidines Calibration Mix
2,000µg/mL each in methanol, 1mL/ampul
Each 5-pk. 10-pk.
31030 31030-510 —
w/data pack
31030-500 31030-520 31130
The silarylene stationary phase in Rtx®-5Sil MS columns incorporates phenyl rings into the polymer backbone.
This improves thermal stability and makes the phase less prone to oxidative degradation, significantly reducing
bleed. Rtx®-5Sil MS columns are ideal for use with GC/MS systems, including ion trap systems. The 0.28mm ID
columns increase sample capacity, relative to 0.25mm ID columns, without significant loss in resolution. We
recommend them for environmental analyses.
Rtx®-5Sil MS Columns (fused silica)
(Selectivity similar to Crossbond® 5% diphenyl/95% dimethyl polysiloxane)
ID df (µm) temp. limits 15-Meter 30-Meter
0.25mm 0.10 -60 to 330/350°C 12705 12708
0.25 -60 to 330/350°C 12720 12723
0.50 -60 to 330/350°C 12735 12738
1.00 -60 to 325/350°C 12750 12753
0.28mm 0.25 -60 to 330/350°C 12790 12793
0.50 -60 to 330/350°C 12791 12794
1.00 -60 to 325/350°C 12792 12795
For Rtx® -5Sil MS columns of other IDs, refer to our chromatography supplies catalog,
or visit our website.