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TECH TIP!
Table I Recommended SimDist columns
(100% PDMS) for use in ASTM SimDist
methods.
Column: MXT®-1HT Sim Dist, 5m, 0.53mm ID, 0.20µm (cat.# 70115); Sample: C10-C100, 1% in carbon disulfide; Inj.: 0.2µL
near on-column (PTV); Inj. temp.: 40°C to 430°C @ 100°C/min.; Carrier gas: helium, constant flow; Flow rate: 20mL/min.;
Oven temp.: 40°C to 430°C @ 25°C/min.; Det.: FID @ 430°C; Chromatograms courtesy of Joaquin Lubkowitz, Separation
Systems, Gulf Breeze, FL.
GC_PC01120
Figure 2 Robust MXT®-1HT SimDist columns meet all ASTM D6352 requirements,
even under accelerated conditions.
Check the system for leaks
using an electronic leak
detector. (cat. # 22839)
Visit for a complete list of petroleum standards and accessories.
Use gas filters to remove
oxygen and moisture
from the carrier gas.
See the triple filter
special offer on page 8.
When installing a column,
prevent leaks by using a
proper cutting device
(such as a scoring wafer
or MXT® tubing scorer)
to ensure the column
is not crushed.
(cat. # 20523)
Use graphite ferrules for column
installation; Vespel®/graphite
ferrules may leak, due to
expansion and contraction at
high temperatures (>400°C).
ID df (µm) temp. limits length* cat. #
0.53mm 0.10 -60 to 430/450°C 5 70112
0.53mm 0.20 -60 to 430/450°C 5 70115
0.53mm 0.21 -60 to 430/450°C 10 70118
0.53mm 0.88 -60 to 400/430°C 5 70131
0.53mm 1.0 -60 to 380/400°C 10 70130
0.53mm 1.2 -60 to 380/400°C 10 70119
0.53mm 2.65 -60 to 360/400°C 10 70132
0.53mm 5.0 -60 to 360/400°C 10 70133
*Length in meters
MXT®-1HT Sim Dist Column
(Siltek® treated stainless steel)
(nonpolar phases)
ASTM
Method Range Recommended Column
D2887 C5-C44 5/10m x 0.53mm,
df = 0.88 – 2.65µm
D7213 C5-C60 5m x 0.53mm,
(2887-ext) df = 0.15 – 1.2µm
D3710 Gasoline up to 10m x 0.53mm,
FBP 260°C (C14) df = 2.65µm
D5307 Crude up to 5m x 0.53mm,
FBP 538°C (C42) df = 0.2µm
D6352/ C10-C90/ 5m x 0.53mm,
D7500 C7-C110 df = 0.1 – 0.2µm
D7169 C5-C100 5m x 0.53mm,
df = 0.2 µm
FBP=final boiling point
Oxygen and moisture will dramatically
reduce siloxane phase stability, especially at
temperatures over 400°C. To ensure maxi-
mum column lifetime, follow these guidelines
for proper instrument set-up.
Al Carusone, Technical Service Specialist
17
Website : E-mail : TelNo : 03 9762 2034 . . . in AUSTRALIA