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GC COLUMNS |
HIGH-PERFORMANCE RXI COLUMNS
Rxi® Columns Over view
Figure 6
Rxi® columns are engineered to assure column-to-column and lot-to-lot reproducibility.
GC_EV00819
Column:
Rxi
®
-5ms, 30m, 0.25mm ID, 0.25µm (cat.# 13423)
Sample:
500µg/mL Isothermal Column Test Mix in toluene
Inj.:
1.0µL, split injection (split ratio 1:100), 4mm single gooseneck inlet liner
with wool (cat.# 22405)
Inj. temp.:
250°C
Carrier gas:
hydrogen, constant flow
Linear velocity: 38cm/sec. @ 135°C
Oven temp.:
135°C
Det.:
FID @ 330°C
1. 1,6-hexanediol
2. 4-chlorophenol
3. methyl nonanoate
4. 1-decylamine
5. tridecane
6. 1-undecanol
7. acenaphthylene
8. pentadecane
Column 722883
Batch #1
Column 717989
Batch #2
Column 720331
Batch #3
1
2
3
5
6
7
8
4
Lowest Bleed
Rxi® columns are more stable at high temperatures than any other manufacturer’s column (Figure 5), resulting in higher system sen-
sitivity. This low-bleed characteristic is the result of superior stabilization achieved by optimizing polymer cross-linking and surface
deactivation technologies. Benefits of using ultra-low bleed Rxi® columns include:
• Increased sensitivity, for lower detection limits and better matches to mass spectral libraries.
• Faster system stabilization.
• Reduced detector contamination and less downtime for maintenance.
Exceptional Reproducibility
Chromatographers today need to know that every column they receive is going to perform the same way as the column it replaces.
Unmatched manufacturing precision and stringent quality control mean Rxi® columns exceed industry standards, resulting in the best
column-to-column reproducibility available as measured by efficiency, retention, bleed, and inertness (Figure 6).
0
2
4
6
8
10
12
14
16
18
20
22
24
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
GC_EV00822
Reference Peak
1ng tridecane
DB-5ms
DB-5
HP-5ms
ZB-5ms
VF-5ms
ZB-5
Rxi®-5ms
pA
330°C
350°C
Comparison of 30m x 0.25mm ID,
0.25µm 5%-diphenyl columns at
330°C through 350°C; hydrogen
carrier gas; flame ionization
detection.
Improve sensitivity and accuracy at trace
levels with low bleed Rxi® columns.
Figure 5
Rxi® columns have the lowest bleed among all major brands of columns.
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011