|
Aluminum-clad fused silica columns offer the same inert
internal fused silica surface, but with an outer layer
of aluminum instead of the standard polyimide normally
found on GC capillary columns. Polyimide has an
upper temperature limit of approximately 390°C before
degradation occurs. By utilizing an aluminum outer
layer, GC columns can extend the operating temperature
range upwards to 440-450°C which is useful for high
molecular weight applications.
The
400-1HT phase is similar to our
non-polar 007-1 dimethylpolysiloxane phase, which
separates compounds according to boiling point, but
400-1HT columns are produced on 0.23mm ID aluminum-clad fused
silica. This allows for higher operating
temperatures compared to the standard polyimide-clad
fused silica columns. The 400-1HT columns can be
programmed up to 420-440°C and are well suited for high
molecular weight applications such as crude oils and
waxes.
|
|
|
 |
Bonded and
Crosslinked |
|
|
Non polar |
|
|
Excellent
thermal stability |
|
|
Comparable to:
SE-30, OV-1, OV-101 |
|
|
Similar
phases: HT5 |
|
|
USP Phase Specification: G1,
G2 |
|
|
|
|
|
|
400-1HT dimethylpolysiloxane
ALUMINUM-CLAD FUSED SILICA columns are available
in column I.D.'s and lengths as noted below.
|
|
I.D. |
10M. |
15M. |
25M. |
30M. |
50M. |
60M. |
75M. |
100M. |
STANDARD
FILM THICKNESS RANGE |
|
0.23mm |
 |
|
|
|
|
|
|
|
0.1 -
0.25µm |
|
Inquire with
tech@quadrexcorp.com
about custom lengths and films. |
|
400-1HT
OPERATING TEMPERATURE RANGE |
|
film thickness |
temperature range |
|
up to 0.25µm |
-50° C to 440° C |
| |
|
400-1HT
Bonded Phase Retention Index |
|
benzene |
1-nitropropane |
2-pentanone |
pyridine |
butanol |
|
662.5 |
720 |
668.75 |
730 |
646.88 |
|
