The B-Dex 225 is nonbonded, therefore it does not support aqueous injections. Injecting water can wash the phase out of the column. It's essential for both the samples and the carrier gas to be moisture free. This applies to all non-bonded phase columns, not just chiral columns.
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β-DEX™ 225
L × I.D. 30 m × 0.25 mm, df 0.25 μm
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Informacje o tej pozycji
eCl@ss:
32119290
UNSPSC Code:
41115710
NACRES:
SB.54
Informacje o cenach i dostępności nie są obecnie dostępne.
Pomoc techniczna
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Pozwól nam pomócmaterial
fused silica
Quality Segment
description
GC capillary column
analyte chemical class(es)
alcohols, amino acids, amphetamines, ketones, terpenes
parameter
30-230 °C temperature
Beta value
250
df
0.25 μm
technique(s)
gas chromatography (GC): suitable
L × I.D.
30 m × 0.25 mm
matrix active group
Chiral, non-bonded; 25% 2,3-di-O-acetyl-6-O-TBDMS-β-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase
application(s)
agriculture
chemicals and industrial polymers
cleaning products
clinical
cosmetics
environmental
flavors and fragrances
food and beverages
forensics and toxicology
life science and biopharma
personal care
pharmaceutical (small molecule)
column type
capillary chiral
separation technique
chiral
General description
The Supelco β-DEX 225 is a modified form of the β-DEX 325 phase, and employs acetyl derivatives at the 2,3-positions instead of more traditional methyl derivatives. The chiral stationary phase in β-DEX 225 columns contains 2,3-di-O-acetyl-6-0-TBDMS-β-cyclodextrin embedded in an intermediate polarity phase. These columns provide unique selectivity for enantiomeric separations of small molecules: alcohols, aldehydes (e.g., 2-phenylpropionaldehyde), esters (e.g. methyl malate, methyl lactate), flavor compounds and ketones.
Capillary GC column is also known as open tubular column. The carrier gas flows through the central aperture and is unrestricted throughout the length of the column.
Features and Benefits
Temp. Limits:
- 30 °C to 230 °C
Other Notes
We offer a variety of chromatography accessories including analytical syringes
Legal Information
DEX is a trademark of Sigma-Aldrich Co. LLC
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Ta pozycja | |||
|---|---|---|---|
| description L × I.D. 30 m × 0.25 mm, df 0.25 μm | description L × I.D. 30 m × 0.25 mm, df 0.25 μm | description L × I.D. 30 m × 0.25 mm, df 0.25 μm | description L × I.D. 30 m × 0.25 mm, df 0.25 μm |
| matrix active group Chiral, non-bonded; 25% 2,3-di-O-acetyl-6-O-TBDMS-β-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase | matrix active group Chiral, non-bonded; 25% 2,3-di-O-acetyl-6-O-TBDMS-α-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase | matrix active group Chiral, non-bonded; 25% 2,3-di-O-methyl-6-O-TBDMS-γ-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase | matrix active group Chiral, non-bonded; 25% 2,3-di-O-acetyl-6-O-TBDMS-γ-cyclodextrin in SPB-20 poly(20% phenyl/80% dimethylsiloxane) phase |
| parameter 30-230 °C temperature | parameter 30-230 °C temperature | parameter 30-230 °C temperature | parameter 30-230 °C temperature |
| technique(s) gas chromatography (GC): suitable | technique(s) gas chromatography (GC): suitable | technique(s) gas chromatography (GC): suitable | technique(s) gas chromatography (GC): suitable |
| column type capillary chiral | column type capillary chiral | column type capillary chiral | column type capillary chiral |
| application(s) agriculture | application(s) agriculture | application(s) agriculture | application(s) agriculture |
| material fused silica | material fused silica | material fused silica | material fused silica |
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After reading the care document and noting that the CHIRALDEX TA columns should not be exposed to moisture in the sample, is it acceptable to inject aqueous samples into the beta DEX 225 column?
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