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GC COLUMNS | APPLICATION-SPECIFIC COLUMNS
Environmental
Rxi®-624Sil MS Columns (fused silica)
(midpolarity Crossbond® phase)
• Low-bleed, high-thermal stability column—maximum temperatures up to 320 °C.
• Inert—excellent peak shape for a wide range of compounds.
• Selective—G43 phase highly selective for volatile organics and residual solvents,
great choice for USP<467>.
• Manufactured for column-to-column reproducibility—well-suited for validated
methods.
Rxi®-624Sil MS (G43) Structure
x
Si O
(CH2) 3
CH3 CH3
CH3
Si O R O
CH3
CH3
Si
94% y
CH3
CH3
Si
C N
similar phases
DB-624, VF-624ms, CP-Select 624 CB
20-Meter 30-Meter 60-Meter 75-Meter 105-Meter
ID df temp. limits cat.# price cat.# price cat.# price cat.# price cat.# price
0.18 mm 1.00 µm -20 to 300/320 °C 13865
0.25 mm 1.40 µm -20 to 300/320 °C 13868 13869
0.32 mm 1.80 µm -20 to 300/320 °C 13870 13872
0.53 mm 3.00 µm -20 to 280/300 °C 13871 13873 13874 13875
Volatiles by EPA Method 8260 on Rxi®-624Sil MS (30 m, 0.25 mm ID, 1.40 µm)
GC_EV1169
Column Rxi®-624Sil MS, 30 m, 0.25 mm ID, 1.40 µm (cat.# 13868)
Sample 8260A surrogate mix (cat.# 30240)
8260A internal standard mix (cat.# 30241)
8260B MegaMix® calibration mix (cat.# 30633)
VOA calibration mix #1 (ketones) (cat.# 30006)
8260B acetate mix (Revised) (cat.# 30489)
California oxygenates mix (cat.# 30465)
502.2 calibration mix #1 (gases) (cat.# 30042)
Conc.: 25 ppb in RO water
Injection Purge and trap split (split ratio 30:1)
Inj. Temp.: 225 °C
Purge and Trap
Instrument: OI Analytical 4660
Trap Type: 10 Trap
Purge: 11 min @ 20 °C
Desorb Preheat Temp.: 180 °C
Desorb: 0.5 min @ 190 °C
Bake: 5 min @ 210 °C
Interface Connection: Injection port
Oven
Oven Temp.: 35 °C (hold 5 min) to 60 °C at 11 °C/min to 220 °C
at 20 °C/min (hold 2 min)
Carrier Gas He, constant flow
Flow Rate: 1.0 mL/min
Detector MS
Mode: Scan
Transfer Line Temp.: 230 °C
Analyzer Type: Quadrupole
Source Temp.: 230 °C
Quad Temp.: 150 °C
Electron Energy: 70 eV
Solvent Delay Time: 1.5 min
Tune Type: BFB
Ionization Mode: EI
Scan Range: 36-260 amu
Instrument Agilent 7890A GC
& 5975C MSD
Notes
Other Purge-and-Trap Conditions:
Sample Inlet: 40 °C
Sample: 40 °C
Water Management: Purge 110 °C, Desorb 0 °C, Bake, 240 °C
Acknowledgement Eclipse 4660 purge-and-trap courtesy of O.I. Analytical, College Station, TX.
Resolution of critical pairs, low bleed,
and high inertness make this a great
column for volatiles!
Volatile Organics Analysis
Similar to: (6%-cyanopropylphenyl)-methylpolysiloxane
For peak list, visit
and enter GC_EV1169 in the search.