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ISO/DIS 9377-4 describes a gas
chromatography/flame ionization detection
(GC/FID) method to analyze total petroleum
hydrocarbons (TPHs) in drinking, surface, waste,
and treated waste water. Previous methods used
Freon® extraction, which was harmful to the envi-
ronment. This new method uses less harmful sol-
vents such as pentane, hexane, or cyclohexane for
sample extraction.
Restek now offers mixtures for ISO/DIS 9377-4
analyses. Florisil® cleanup to remove polar com-
pounds is accomplished using a 150-250µm
(60/100 mesh) sample preparation column. The
analytical column suggested is either an Rtx®-1 or
an Rtx®-5 column with dimensions of 10-25m,
0.25-0.53mm ID, and 0.25-1.0µm film thickness.
✔ Standard Mixture Stock Solution
diesel #2 (additive free)
mineral oil (additive free [i.e. USP grade] bp 325–460 or
C18–C32 retention time range)
5,000 µg/mL each in cyclohexane, 1mL per ampule
(prepares 8mL of 1.25µg/µL calibration curve high point)
Total hydrocarbon concentration 10,000 µg/mL
Ea. 5-pk. 10-pk.
31630 31630-510 —
with data pack
31630-500 31630-520 31730
✔ Quality Control Standard Mixture
diesel #2 (additive free)
mineral oil (additive free [i.e. USP grade] bp 325–460 or
C18–C32 retention time range)
500µg/mL each in acetone, 1mL per ampule (enough to spike
one quality control sample)
Total hydrocarbon concentration 1000µg/mL
Ea. 5-pk. 10-pk.
31631 31631-510 —
with data pack
31631-500 31631-520 31731
✔ Florisil® Cartridge Quality Control
Standard Mixture
Diesel #2 (additive free)
mineral oil (additive free [i.e. USP grade] bp 325–460 or
C18–C32 retention time range)
1000µg/mL each in cyclohexane, 10mL per ampule (enough to
check one Florisil ® cartridge)
Total hydrocarbon concentration 2000µg/mL
Ea. 5-pk. 10-pk.
31632 31632-510 —
with data pack
31632-500 31632-520 31732
✔ Standard Mixture of n-alkanes for
System Performance Test
n-decane n-hexacosane
n-dodecane n-octacosane
n-tetradecane n-triacontane
n-hexadecane n-dotriacontane
n-octadecane n-tetratriacontane
n-eicosane n-hexatriacontane
n-docosane n-octatriacontane
n-tetracosane n-tetracontane
50µg/mL each in cyclohexane, 1mL per ampule
Ea. 5-pk. 10-pk.
31633 31633-510 —
with data pack
31633-500 31633-520 31733
✔ Extraction Solvent Stock Solution #1
n-decane 20µL/L
n-tetracontane 20mg/L
in cyclohexane, 5mL per ampule (makes 50mL of extraction
solvent, enough for 1 sample)
Ea. 5-pk. 10-pk.
31634 31634-510 —
with data pack
31634-500 31634-520 31734
✔ Extraction Solvent Stock Solution #2
n-decane 20µL/L
n-tetracontane 20mg/L
in cyclohexane, 20mL per ampule (makes 200mL of extraction
solvent, enough for 4 samples)
Ea. 5-pk. 10-pk.
31635 31635-510 —
with data pack
31635-500 31635-520 31735
Analytical Reference
Materials & Columns
ISO/DIS 9377-4 Water Quality Testing for
Total Petroleum Hydrocarbons (TPH)
by Christopher Cox, R&D Manager
✔ For GC analysis of TPHs in water.
✔ Environmentally safer method than
those performed previously. new
✔ Rtx®-1 (fused silica)
Crossbond® 100% dimethyl polysiloxane
ID df (µm) temp. limits 15-Meter
0.25mm 0.25 -60 to 330/350°C 10120 $225
0.25mm 0.50 -60 to 330/350°C 10135 $225
0.32mm 0.25 -60 to 330/350°C 10121 $245
0.32mm 0.50 -60 to 330/350°C 10136 $245
0.53mm 0.25 -60 to 320/340°C 10122 $260
0.53mm 0.50 -60 to 310/330°C 10137 $260
0.53mm 1.00 -60 to 310/330°C 10152 $260
✔ MXT®-1 (Silcosteel®)
Crossbond® 100% dimethyl polysiloxane
ID df (µm) temp. limits 15-Meter
0.25mm 0.25 -60 to 360°C 70120 $235
0.25mm 0.50 -60 to 350°C 70135 $235
0.28mm 0.25 -60 to 360°C 70121 $260
0.28mm 0.50 -60 to 330°C 70136 $260
0.53mm 0.25 -60 to 360°C 70122 $275
0.53mm 0.50 -60 to 330°C 70137 $275
0.53mm 1.00 -60 to 320°C 70152 $275
Always in stock!
Columns
✔ Rtx®-5 (fused silica)
Crossbond® 5% diphenyl/95% dimethyl
polysiloxane
ID df (µm) temp. limits 15-Meter
0.25mm 0.25 -60 to 330/350°C 10220
0.25mm 0.50 -60 to 330/350°C 10235
0.32mm 0.25 -60 to 330/350°C 10221
0.32mm 0.50 -60 to 330/350°C 10236
0.53mm 0.25 -60 to 320/340°C 10222
0.53mm 0.50 -60 to 310/330°C 10237
0.53mm 1.00 -60 to 310/330°C 10252
✔ MXT®-5 (Silcosteel®)
Crossbond® 5% diphenyl/95% dimethyl
polysiloxane
ID df (µm) temp. limits 15-Meter
0.25mm 0.25 -60 to 360°C 70220
0.25mm 0.50 -60 to 350°C 70235
0.28mm 0.25 -60 to 360°C 70221
0.28mm 0.50 -60 to 330°C 70236
0.53mm 0.25 -60 to 360°C 70222
0.53mm 0.50 -60 to 330°C 70237
0.53mm 1.00 -60 to 325°C 70252
Restek has Rtx® -1,
Rtx® -5, & Rtx®-Wax
columns in stock for
you! There’s no
waiting for the
columns you need.
✔ Stearyl Stearate Test Solution
stearyl stearate
2,000 µg/mL in cyclohexane, 10mL per ampule, (enough to
check one Florisil® cartridge)
Ea. 5-pk. 10-pk.
31636 31636-510 —
with data pack
31636-500 31636-520 31736