SUPELCO Astec CHIRALDEX B-DM手性氣相色譜柱 毛細(xì)管柱
Supelco（色譜科）位于美國(guó)賓夕法尼亞州，是Sigma-Aldrich集團(tuán)下屬的子品牌，Supelco一直通過(guò)提供更新的，更可靠的色譜產(chǎn)品和來(lái)幫助色譜工作者來(lái)解決問(wèn)題，其涉及的領(lǐng)域和行業(yè)有環(huán)境、食品、飲料、政府、醫(yī)藥、化工等

SUPELCO Astec CHIRALDEX B-DM手性氣相色譜柱 毛細(xì)管柱
 

CD Type: β (beta)

Derivative: Dimethyl

Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)

    Incorporates a phase consisting of a 2,3-di-O-methyl-6-t-butyl silyl derivative of β-cyclodextrin. This phase exhibits broad chiral selectivity, resolving aliphatic, olefenic, and aromatic enantiomers. This particular dimethyl phase has been devised to overlap with the applications of both the PM and PH series of columns. To date, it has shown similar selectivities with shorter retention times and greater resolution. It also has exhibited thermal stability equivalent to the PM and is, therefore, the column of choice when elution temperature of the analyte exceeds 200°C. It is considered to be one of the essential columns in a GC column screening protocol.

Features: 

• Broad chiral selectivity
• Combines selectivity of PM and PH
• Thermal limit to 200/220 °C
• Short retention, high resolution
• Beta derivative broadly applicable
• Resolves aliphatic, olefenic and aromatic enantiomers

Mechanism Observations:

• Size selectivity present but not dominant as in DA
• Fewer structural requirements
• Characteristic temperature selectivity

Size Selectivity: 

    Size selectivity is evident; therefore, the inclusion mechanism is playing a role in the separation mechanism but does not dominate as it does in the DA series. The beta form as in the PH series covers a very broad range of molecular sizes and, therefore, has the greatest applicability.

Included in GC Screening Kit 71030AST.

SUPELCO Astec CHIRALDEX B-DM手性氣相色譜柱 毛細(xì)管柱 訂貨信息：

Product #	Description
77022AST	Astec CHIRALDEX? B-DM 毛細(xì)管氣相色譜柱 L × I.D. 20 m × 0.25 mm, df 0.12 μm
77023AST	Astec CHIRALDEX? B-DM 毛細(xì)管氣相色譜柱 L × I.D. 30 m × 0.25 mm, df 0.12 μm
77024AST	Astec CHIRALDEX? B-DM 毛細(xì)管氣相色譜柱 L × I.D. 40 m × 0.25 mm, df 0.12 μm
77025AST	Astec CHIRALDEX? B-DM 毛細(xì)管氣相色譜柱 L × I.D. 50 m × 0.25 mm, df 0.12 μm