similar
phases
DB-1, DB-1ms, HP-1, HP-1ms,
Ultra-1, SPB-1, Equity-1
• Stableat high temperatures; improved signal tonoise ratios.
• Excellent inertness for acids andbases; predictable columnperformance.
• Engineered toassure column-to-column reproducibility.
Thecombinationofultra-lowbleedandunsurpassed inertnessmake theRxi
™
-1ms the
best columnchoice foranalysesusinga100%polydimethyl siloxane stationaryphase.
We compared thebleedprofiles of ten competitor columns at both330°C and350°C to theRxi
™
-1ms
column.Atboth temperatures theRxi
™
-1ms columnexhibits the lowestbleed level or equivalentof all the
columns tested.
Rxi™-1msFusedSilicaColumns
Restek's Exceptionally Inert (Rxi
™
) FusedSilicaCapillaryColumns
Figure1
TheRxi™-1ms columnhas the lowest bleedavailable, allowingbetter accuracyand lower
detection limits for active compounds.
0 4 5
6 7
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
18
16
14
12
10
7
6
4
2
0
350°C
135°C
1ngTridecane Reference
Minutes
pA
Rxi
™
-1ms
Competitor A
Competitor B
Competitor C
Competitor D
Competitor E
Competitor F
Competitor G
Competitor H
Competitor I
Competitor J
330°C
Columns included in the comparison areBP-1, DB-1, DB-1ms, EQ-1, HP-1, HP-1ms, Rtx-1, Rxi-1ms, VF-1ms, ZB-1, and ZB-1ms.
The bleed profiles in Figure 1 are labeled randomly.
Column: 100% dimethyl poly-
siloxane 30m, 0.25 ID, 0.25µm
Sample: 1 ng on column tride-
cane in dichloromethane
Inj.: 1.0µL split (split ratio
40:1), 4mm splitless inlet liner
(cat.# 20799)
Inj. temp.: 250°C
Carrier gas: helium, constant
pressure
Linear velocity: 60cm/sec.@
135°C
Oven temp.: 35°C (hold 6min.)
to 330°C@ 30°C/min. (hold 4
min.) to 350°C@ 15°C/min.
rate (hold 6min.)
Det.: FID@350°C
Rxi™-1ms
Rxi™-1ms (nonpolarphase,Crossbond®100%dimethylpolysiloxane)
• General purpose columns for drugs of abuse, essential oils, hydrocarbons, pesticides, PCB congeners
or (e.g.)Aroclor®mixes, sulfur compounds, amines, solvent impurities, simulateddistillation, oxy-
genates, gasoline range organics (GRO), refinery gases.
• Ultra-lowbleed– improved signal tonoise ratio, for better sensitivity andmass spectral integrity.
• Equivalent toUSPG2phase.
CH
3
CH
3
Si
100%
O
20%
OFF
ID df (µm)
temp. limits
15-Meter
30-Meter
60-Meter
0.25mm 0.25 -60 to 330/350°C 13320-R25
$270 $203
13323-R25
$450 $338
13326-R25
$805 $604
0.50 -60 to 330/350°C 13335-R25
$270 $203
13338-R25
$450 $338
13341-R25
$805 $604
1.00 -60 to 330/350°C 13350-R25
$270 $203
13353-R25
$450 $338
13356-R25
$805 $604
0.32mm 0.25 -60 to 330/350°C 13321-R25
$290 $218
13324-R25
$475 $357
13327-R25
$850 $638
0.50 -60 to 330/350°C 13336-R25
$290 $218
13339-R25
$475 $357
13342-R25
$850 $638
1.00 -60 to 330/350°C 13351-R25
$290 $218
13354-R25
$475 $357
13357-R25
$850 $638
4.00 -60 to 330/350°C
13396-R25
$460 $345
0.53mm 0.50 -60 to 330/350°C 13337-R25
$320 $240
13340-R25
$535 $402
1.00 -60 to 330/350°C 13352-R25
$320 $240
13355-R25
$535 $402
1.50 -60 to 330/350°C 13367-R25
$320 $240
13370-R25
$535 $402
13373-R25
$910 $683
ID df (µm)
temp. limits
12-Meter
20-Meter
25-Meter
50-Meter
0.18mm 0.18 -60 to 330/350°C
13302-R25
$385 $289
0.20mm 0.33 -60 to 330/350°C 13397-R25
$240 $180
13398-R25
$380 $285
13399-R25
$650 $488
