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Water Quality Testing
Standards & Columns
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.
See highlighted columns in product listing for rec-
ommended dimensions.
✔ Standard Mixture Stock Solution
diesel #2 (additive free)
motor oil (additive free 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.
31640 31640-510 —
with data pack
31640-500 31640-520 31740
✔ Quality Control Standard Mixture
diesel #2 (additive free)
motor oil (additive free bp 325–460 or
C18–C32 retention time range)
500µg/mL each in acetone, 1mL per ampule (enough to spike
one 900mL quality control sample)
Total hydrocarbon concentration 1,000µg/mL
Ea. 5-pk. 10-pk.
31641 31641-510 —
with data pack
31641-500 31641-520 31741
✔ Florisil® Cartridge Quality Control
Standard Mixture
diesel #2 (additive free)
motor oil (additive free bp 325–460 or
C18–C32 retention time range)
1,000µg/mL each in cyclohexane, 10mL per ampule (enough to
check one 2g Florisil®/2g sodium sulfate cartridge)
Total hydrocarbon concentration 2,000µg/mL
Ea. 5-pk. 10-pk.
31642 31642-510 —
with data pack
31642-500 31642-520 31742
✔ 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 n-hexane, 5mL per ampule (makes 50mL of extraction sol-
vent, 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 n-hexane, 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
✔ 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
✔ Stearyl Stearate Test Solution
stearyl stearate
2,000 µg/mL in cyclohexane, 10mL per ampule, (enough to
check one 2g Florisil®/2g sodium sulfate cartridge)
Ea. 5-pk. 10-pk.
31636 31636-510 —
with data pack
31636-500 31636-520 31736 ISO/DIS 9377-4 & H53 Water Quality Testing for
Total Petroleum Hydrocarbons (TPH)
✔ Updated reference materials for GC analysis of TPH in water.
✔ Determination of hydrocarbon oil index—applicable to drinking,
surface, waste, and treated water.
by Ken Herwehe, Analytical Reference Materials Product Marketing Manager
Columns
Check the annual Chromatography Products Guide for
temp. limits. Highlight indicates a recommended
dimension for this analysis.
✔ 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
0.25mm 0.50 -60 to 330/350°C 10135
0.32mm 0.25 -60 to 330/350°C 10121
0.32mm 0.50 -60 to 330/350°C 10136
0.53mm 0.25 -60 to 320/340°C 10122
0.53mm 0.50 -60 to 310/330°C 10137
0.53mm 1.00 -60 to 310/330°C 10152
✔ MXT®-1 (Silcosteel® )
Crossbond® 100% dimethyl polysiloxane
ID df (µm) temp. limits 15-Meter
0.25mm 0.25 -60 to 360°C 70120
0.25mm 0.50 -60 to 350°C 70135
0.28mm 0.25 -60 to 360°C 70121
0.28mm 0.50 -60 to 330°C 70136
0.53mm 0.25 -60 to 360°C 70122
0.53mm 0.50 -60 to 330°C 70137
0.53mm 1.00 -60 to 320°C 70152
new
new
new