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Restek trademarks:
MXT, Rtx, Silcosteel.
Other trademarks:
VOCARB (Sigma-AldrichCo.)
Product Listing
Rtx
®
-502.2Columns (FusedSilica)
ID df (µm) 20m 30m 40m 60m 105m
0.18mm 1.00 40914 — 40915 —
0.25mm 1.40
— 10915 — 10916 —
0.32mm 1.80
— 10919 — 10920 10921
0.53mm 3.00
— 10908 — 10909 10910
ThePID isused to identify targetVPHanalytes, definedasben-
zene, toluene, ethylbenzene,
m
-xylene,
p
-xylene,
o
-xylene, naph-
thalene, andmethyl-
tert
-butyl-ether.TheVPHmethod identifies
all of thearomaticcompounds after
o
-xylene tonaphthalene.The
reason for thedistinctionof aromatic fromaliphaticcompounds
restsoncurrent data,which suggests aromaticcompounds are
more toxic.
TheFIDdetector isusedonly for reportingaliphaticcompounds.
Thisdetector responds toall hydrocarbons, therebynecessitating
the subtractionof aromaticand target compounds.The latter
analytes subsequentlyare reportedon thePIDdetector.Thereare
twoaliphatic ranges:C5 toC8,whichelute from
n
-pentane to just
before
n
-nonane; andC9 toC12,whichelute from
n
-nonane to
just beforenaphthalene.
AnalyticalReferenceMaterials
RunningMAVPHmethod requires calibrating13 separate com-
pounds.These13compoundsallow for thedeterminationof three
groupsof analytes in the sample: total gasoline, aliphaticandaro-
matichydrocarbons, and individual target compounds.Restekof-
fers the requiredmixtureswith aCertificate ofAnalysis orwith
complete data packs that canbeused for audits and internal qual-
ity assurance.TheVPHmixtures aremade in theappropriatecon-
centrations for spiking, ensuringaccurate identificationand
quantitationof environmental samples inyour laboratory.Restek
alsooffershighconcentrationmixes that canbediluteddown toa
spikingconcentration, useful for cost savings.
MXT
®
-502.2Columns (Silcosteel
®
)
ID df (µm)
30m 60m 105m
0.28mm 1.60
70919
70920
70921
0.53mm 3.00
70908
70909
70910
MAVPHStandard
benzene
500µg/mL
n
-pentane
1000µg/mL
ethylbenzene
500
toluene
1500
isooctane
1500
1,2,4-trimethylbenzene 1000
2-methylpentane
1500
m
-xylene
1000
methyl-
tert
-butyl-ether 1500
o
-xylene
1000
naphthalene
1000
p
-xylene
1000
n
-nonane
1000
inP&Tmethanol, 1mL/ampul.
each
5-pack
10-pack
30434
30434-510
w/data pack
30434-500
30434-520
30534
MAVPHStandardw/Surrogate
benzene
500µg/mL
n
-pentane
1000µg/mL
ethylbenzene
500
toluene
1500
isooctane
1500
1,2,4-trimethylbenzene 1000
2-methylpentane
1500
m
-xylene
1000
methyl-
tert
-butyl-ether 1500
o
-xylene
1000
naphthalene
1000
p
-xylene
1000
n
-nonane
1000
2,5-dibromotoluene* 1000
inP&Tmethanol, 1mL/ampul.
*surrogate
each
5-pack
10-pack
30452
30452-510
w/data pack
30452-500
30452-520
30552
MAVPHSurrogateStandard
2,5-dibromotoluene
1000µg/mL in P&Tmethanol, 1mL/ampul.
each
5-pack
10-pack
30435
30435-510
w/data pack
30435-500
30435-520
30535
MAVPHMatrixSpikeMixw/ Surrogate
benzene
n
-pentane
ethylbenzene
toluene
isooctane
1,2,4-trimethylbenzene
2-methylpentane
m
-xylene
methyl-
tert
-butyl-ether
o
-xylene
naphthalene
p
-xylene
n
-nonane
2,5-dibromotoluene (surrogate)
2500µg/mL each inP&Tmethanol, 1mL/ampul.
each
5-pack
10-pack
30454
30454-510
w/data pack
30454-500
30454-520
30554
10,000µg/mL in P&Tmethanol, 1mL/ampul.
each
5-pack
10-pack
30453
30453-510
w/data pack
30453-500
30453-520
30553
