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
*Listedasan“additional”compound inMethod625
(diphenylamine is included in thismix inplaceof
unstableN-nitrosodiphenylamine).The sixother
“additional”compoundsarecomponents inother
Restek referencemixesused forMethod625: benzi-
dine is included incat.#31030;
β
-BHC,
δ
-BHC,
endosulfan I, endosulfan II, endrinare incat.#32291.
SemivolatilesMegaMix
™
, EPAMethod 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 phasewith polarity similar to 5% diphenyl/95% dimethyl polysiloxane.
acenaphthene-d10
chrysene-d12
1,4-dichlorobenzene-d4
naphthalene-d8
perylene-d12
phenanthrene-d10
SV Internal StandardMix
**Requires special handling(warmingand sonication)beforeuse.
Let us create the right solution for you!
We canmake
CUSTOMMIXTURES
tomeet your specific compound lists.
Call us at 800-356-1688 or 814-353-1300 or
use theCustomReferenceMaterialsRequest
Formonour website:
Each
5-pk.
10-pk.
2,000µg/mL each inmethylene chloride, 1mL/ampul
31206
31206-510
—
31206-500
31206-520
31306
4,000µg/mL each inmethylene chloride, 1mL/ampul**
31006
31006-510
—
31006-500
31006-520
31106
Rtx
®
-5SilMSColumn (fused silica)
(Selectivity similar toCrossbond
®
5% diphenyl/95%
dimethyl polysiloxane)
ID df (µm)
temp. limits
0.25mm 0.25 -60 to 330/350°C 12723
30-Meter
Rtx
®
-5SilMS columns are especiallywell suited for
Method625. Extracts of environmental samples ana-
lyzedusing thismethod commonly containhigh
molecularweight contaminants, andhighbake-out
temperatures are needed to remove these from the
column. TheRtx
®
-5SilMS stationary phase and the
proprietary deactivationused toprepare these
columns can reliablywithstand sustained tempera-
tures of 330ºC, andwill not exhibit the activity that
often is causedby subjecting a column to these con-
ditions. Analysts usingRtx
®
-5SilMS columns can
program their GCs to350ºC for especially persistent
contamination. Figure 1 shows Restek analytical ref-
erencematerials analyzedon anRtx
®
-5SilMS col-
umnprogrammed to330ºC. Bleed is negligible, rela-
tive to the 10ng on-column concentrationof the tar-
get analytes, such as benzo(ghi)perylene.
Toobtain Figure 1, conditionswere optimized to
achieve the fastest analysiswithout sacrificing resolu-
tionof analytes that share quantification ions, such as
benzo(b)fluoranthene andbenzo(k)fluoranthene
(peaks 55&56). Stepswere taken to focus N-
nitrosodimethylamine. Tominimize tailing, the
pulsed-splitless hold-timewas reduced to0.3min-
utes to reduce the time the analytes spend in the
injectionport. This step also sends a higher percent-
age of solvent to the split vent, allowing resolutionof
the amine from the solvent. The initial temperature,
35ºC, allows better analyte focus at the column inlet.
The pulsedpressurewas reduced from30psi to
20psi to allow even transfer of N-nitrosodimethy-
lamine to the column. Finally, the flow ratewas
reduced from1.1mL/min. to1.0mL/min. Analytes
present at higher concentrationswill exhibit less tail-
ing at the lower rate.
benzidine
3,3'-dichlorobenzidine
605Benzidines CalibrationMix
2,000µg/mL each inmethanol, 1mL/ampul
Each
5-pk.
10-pk.
31030
31030-510
—
w/data pack
31030-500
31030-520
31130
The silarylene stationary phase inRtx
®
-5Sil MS columns incorporates phenyl rings into the polymer backbone.
This improves thermal stability andmakes the phase less prone to oxidative degradation, significantly reducing
bleed. Rtx
®
-5Sil MS columns are ideal for usewithGC/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
®
-5SilMSColumns (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
®
-5SilMS columns of other IDs, refer to our chromatography supplies catalog,
or visit ourwebsite.
