GC Columns
SH-20 Mid-polarity phase: Crossbond™ 20% diphenyl / 80% dimethyl polysiloxane
SH-20 Structure
CH 3
General-purpose columns for volatile compounds, flavor compounds, alcoholic beverages.
Equivalent to USP G28 and G32 phases.
O
O
Si
CH 3 Si
Similar phases: SPB-20, 007-20, AT-20, EC-20.
20%
80%
ID
df
Temp. Range
30 m
60 m
0.10 µm
-20 to 300/320 °C
227-36130-01
227-36130-02
0.25 µm
-20 to 300/320 °C
227-36131-01
227-36131-02
0.25 mm
0.50 µm
-20 to 290/310 °C
227-36132-01
227-36132-02
1.00 µm
-20 to 280/300 °C
227-36133-01
227-36133-02
0.10 µm
-20 to 300/320 °C
227-36134-01
227-36134-02
0.25 µm
-20 to 300/320 °C
227-36135-01
227-36135-02
0.50 µm
-20 to 290/310 °C
227-36136-01
227-36136-02
0.32 mm
1.00 µm
-20 to 280/300 °C
227-36137-01
227-36137-02
1.50 µm
-20 to 270/290 °C
227-36138-01
227-36138-02
3.00 µm
-20 to 250/270 °C
227-36139-01
227-36139-02
0.10 µm
-20 to 260/280 °C
227-36140-01
227-36140-02
0.25 µm
-20 to 260/280 °C
−
227-36141-01
0.50 µm
-20 to 260/280 °C
227-36142-01
−
0.53 mm
1.00 µm
-20 to 260/280 °C
227-36143-01
227-36143-02
1.50 µm
-20 to 250/270 °C
227-36144-01
−
3.00 µm
-20 to 240/260 °C
227-36145-01
227-36145-02
SH-25 Structure
SH-25 Mid-polarity phase: Crossbond™ 25% diphenyl / 75% dimethyl polysiloxane
General-purpose columns for volatile compounds, flavor compounds, alcoholic beverages.
25% 75%
ID
df
Temp. Range
60 m
0.32 mm
1.49 µm
-20 to 250/270 °C
227-36329-01
Tocopherols and Tocotrienols
Peaks 1. δ-tocopherol 2. β-tocopherol 3. γ-tocopherol 4. dl-δ-tocotrienol 5. α-tocopherol
Conditions
Column
: SH-20, 30 m, 0.53 mm ID, 0.50 μm (P/N: 227-36142-01) : 1 mg/mL each component in isooctane
Sample
6. dl-β-tocotrienol 7. dl-γ-tocotrienol 8. hexadecyl hexadecanoate 9. dl-α-tocotrienol
Inj. Vol.
: 1 μL split (split ratio 20:1)
Inj. Temp
: 320 °C
Carrier Gas
: Hydrogen, constant ow rate 5.2 mL/min : 270 °C to 290 °C at 2 °C/min 290 °C to 320 °C at 10 °C/min (hold 1 min)
Oven Temp
Detector
: FID, 320 °C
Pg C-18
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