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GC COLUMNS | HIGH-PERFORMANCE Rxi® COLUMNS
Rxi®-35Sil MS
Similar to: (35%-phenyl)-methylpolysiloxane
Rxi®-35Sil MS Columns (fused silica)
(midpolarity Crossbond® phase)
• Special selectivity and excellent inertness for substituted polar compounds, such as
drugs, pesticides, herbicides, PCBs, phenols, etc.
• Provides superior separation for cannabinoids.
• Very low-bleed phase for GC-MS analysis.
• Extended temperature range: 50 °C to 340/360 °C.
Rxi®-35Sil MS Structure
x
Si O
65%
CH3
CH3
Si O
y
R O
CH3
CH3
Si
CH3
CH3
Si
similar phases
DB-35ms, DB-35msUI, VF-35ms, MR2
*Maximum temperatures listed are for shorter length columns. Longer columns may have a different maximum temperature.
15-Meter 30-Meter
ID df temp. limits* cat.# price cat.# price
0.25 mm 0.25 µm 50 to 340/360 °C 13820 13823
0.50 µm 50 to 340/360 °C 13835 13838
1.00 µm 50 to 320/340 °C 13850 13853
0.32 mm 0.25 µm 50 to 340/360 °C 13821 13824
0.50 µm 50 to 340/360 °C 13836 13839
1.00 µm 50 to 320/340 °C 13851 13854
0.53 mm 0.50 µm 50 to 340/360 °C 13837 13840
1.00 µm 50 to 325/340 °C 13852 13855
1.50 µm 50 to 310/330 °C 13856 13857
3.00 µm 50 to 280/300 °C 13858 13859
Cannabinoids on Rxi®-35Sil MS Using Hydrogen Carrier Gas by GC-FID
GC_FS0501
Column Rxi®-35Sil MS, 15 m, 0.25 mm ID, 0.25 µm (cat.# 13820)
Sample Cannabinoids standard (cat.# 34014)
Cannabichromene (cat.# 34092)
delta-8-Tetrahydrocannabinol (THC) (cat.# 34090)
Cannabigerol (cat.# 34091)
Injection
Inj. Vol.: 1 µL split (split ratio 50:1)
Liner: Sky® 4 mm Precision® liner w/wool (cat.# 23305.5)
Inj. Temp.: 250 °C
Split Vent Flow Rate: 125 mL/min
Oven
Oven Temp.: 225 °C (hold 0.1 min) to 330 °C at 35 °C/min (hold 0.9 min)
Carrier Gas H 2, constant flow
Flow Rate: 2.5 mL/min
Detector FID@ 350 °C
Constant Column +
Constant Make-up: 50 mL/min
Make-up Gas Type: N 2
Hydrogen flow: 40 mL/min
Air flow: 450 mL/min
Data Rate: 20 Hz
Instrument Agilent/HP6890 GC
Peaks tR (sec)
1. Cannabichromene 83.3
2. Cannabidiol 85.9
3. Delta-8-Tetrahydrocannabinol 94.9
4. Delta-9-Tetrahydrocannabinol 98.4
5. Cannabigerol 100.9
6. Cannabinol 106.7
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for Medical Cannabis Labs
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