beta-DEX 225, L x I.D. 30 m x 0.25 mm, df 0.25 mum

Chem/Phys Resistance

Temp. Limits: 30 °C to 230 °C

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.

Legal Information

DEX is a trademark of Sigma-Aldrich Co. LLC

Other Notes

We offer a variety of chromatography accessories including analytical syringes