Restek-2015

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GC COLUMNS | PLOT COLUMNS
Fused Silica Molecular Sieve 5A Columns
similar phases
HP PLOT Molesieve, CP-Molsieve 5A,
Molsieve 5A, AT-Molsieve, PLT-5A
tech tip
Molecular sieve materials
are very hydrophilic
Because molecular sieve materials are
very hydrophilic, they will adsorb water
from the sample or carrier gas. Water
contamination can have a detrimental
effect on peak symmetry and can reduce
the resolution of all compounds. If
water contamination occurs, reactivate
your Rt®-Msieve 5A PLOT column by
conditioning at 300 °C with dry carrier
gas flow for 3 hours.
did you know?
Rt®-Msieve 5A PLOT columns are designed
for efficient separation of Ar/O 2 and other
permanent gases, including CO.
also
available
Metal MXT®
PLOT Columns
See .
Separation of Argon/Oxygen and Other Permanent Gases on
Rt®-Msieve 5A
GC_PC00898
Column Rt®-Msieve 5A, 30 m, 0.53 mm ID, 50 µm (cat.# 19723)
Sample Permanent gases
Injection Sample valve
Sample Loop Vol.: 5 µL
Valve Name: 6-port Valco® valve
Inj. Temp.: 200 °C
Valve Temp.: Ambient
Oven
Oven Temp.: 27 °C (hold 5 min) to 100 °C at 10 °C/min (hold 5 min)
Carrier Gas He, constant flow
Flow Rate: 5.0 mL/min
Detector Valco® helium ionization detector @ 150 °C
Peaks Conc.
(µg/mL)
1. Hydrogen 40
2. Argon 30
3. Oxygen 50
4. Nitrogen 50
5. Methane 40
6. Carbon monoxide 50
Argon resolved
from oxygen.
Excellent
peak shape
for carbon
monoxide.
Rt®-Msieve 5A Columns (fused silica PLOT)
• Improve accuracy with sharp, symmetrical peaks for argon, oxygen, and carbon
monoxide.
• Easily separate permanent gases at temperatures above ambient.
• Restek® PLOT technology reduces particle release, improving flow reproducibility
and reducing downtime for maintenance.
• Stable to 300 °C.
Molecular Sieve 5A PLOT Columns
Restek’s molecular sieve 5A PLOT columns are designed for efficient separation of
argon/oxygen and other permanent gases, including carbon monoxide. Special coating
and deactivation procedures ensure chromatographic efficiency and the integrity of
the porous layer coating. Molecular sieves have very high retention, allowing separa-
tions of permanent gases at temperatures above ambient. Our deactivation technol-
ogy also allows carbon monoxide to elute as a sharp peak. Additionally, our unique
immobilization process guarantees that the uniform particles remain adhered to the
tubing—even after continuous valve-cycling.
15-Meter 30-Meter
ID df temp. limits cat.# price cat.# price
0.25 mm 20 µm to 300 °C 19773 —
0.32 mm 30 µm to 300 °C 19720 19722
0.53 mm 50 µm to 300 °C 19721 19723