3.5" coil
7" diameter 11-pin cage
ID
df
temp. limits
15-Meter
30-Meter
30-Meter
0.25mm 20µm to 300°C
79717
0.53mm 50µm to 300°C
79723-273
79723
109
GCCOLUMNS |
PLOTCOLUMNS
Molecular Sieve 5A Columns
PermanentgasesonanRt®-Msieve5APLOTcolumn.
GC_PC00898
1. hydrogen
40ppm
2. argon
30ppm
3. oxygen
50ppm
4. nitrogen
50ppm
5. methane
40ppm
6. carbonmonoxide 50ppm
Column:
Rt
®
-Msieve 5A, 30m, 0.53mm ID, 50µm (cat.# 19723)
Sample:
permanent gases (ppm)
Inj.:
5µL sample loop, 6-port Valco
®
valve, valve temp.: ambient
Inj. temp.:
200°C
Carrier gas:
helium, constant flow
Flow:
5mL/min.
Oven temp.:
27°C (hold 5min.) to 100°C@ 10°C/min. (hold 5min.)
Det.:
Valco
®
helium ionization detector@ 150°C
Argon resolved
fromoxygen.
Excellent
peak shape
for carbon
monoxide.
didyou
know
?
Rt®-Msieve5APLOTcolumnsaredesigned
for efficient separationofAr/O
2
andother
permanentgases, includingCH
4
, C
2
H
6
, andCO.
Becausemolecular sievematerialsarevery
hydrophilic, theywill adsorbwater from the
sampleor carriergas.Water contamination
canhaveadetrimental effectonpeak
symmetryandcan reduce the resolutionof
all compounds. Ifwater contamination
occurs, reactivateyour Rt®-Msieve5APLOT
columnbyconditioningat 300 °Cwithdry
carriergas flow for 3hours.
didyou
know
?
ShinCarbonSTmicropackedcolumnsareanother alternative for analyzingpermanentgases.
See
page130
for information.
advanced
technology
Detailson
pages106-107
.
tech
tip
Rt®-Msieve5AColumns
(fusedsilicaPLOT)
MolecularSieve5APLOTColumns
Restek’s molecular sieve 5A PLOT columns are designed for efficient separation of
Ar/O
2
and other permanent gases, including CH
4
, C
2
H
6
, and CO. Special coating and
deactivation procedures ensure chromatographic efficiency and the integrity of the
porous layer coating.Molecular sieveshave veryhigh retention, allowing separations of
permanent gases at temperatures above ambient.Additionally, ourunique immobiliza-
tionprocess guarantees that theuniformparticles remain adhered to the tubing—even
after continuous valve-cycling.
Our revolutionary molecular sieve 5A PLOT columns separate Ar/O
2
and H
2
/He at
ambient temperature or above (see figure). These columns also are an excellent choice
for rapid separationof permanent gases in refineryor natural gas.
MXT®-Msieve5AColumns
(Siltek®-treatedstainlesssteelPLOT)
Advantages ofmetalMXT®PLOT columns include:
• Canbemade in small coil diameters—perfect for tight spaces.
• Will not spontaneouslybreak,making them ideal for rugged environments.
• Designed for robust performance inprocessGCs and field instruments.
• Available in3.5" coil diameter or 7" diameter 11-pin cage.
NEW!
ID
df
temp. limits
15-Meter
30-Meter
0.25mm 20µm to 300°C
19773
0.32mm 30µm to 300°C
19720
19722
0.53mm 50µm to 300°C
19721
19723
tech
tip
Carbondioxidewill not elute frommolecular
sievecolumns. Rt®-Q-BOND isagoodchoice
for thisanalysis.
NEW!
Website :
E-mail :
TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
