久久精品视频在线18,久国产亚洲免

參考價	面議

產(chǎn)品簡介

簡要描述： Astec CHIRALDEX B-PM SUPELCO 手性氣相色譜柱毛細管柱Supelco（色譜科）位于美國賓夕法尼亞州，是Sigma-Aldrich集團下屬的子品牌，Supelco一直通過提供更新的，更可靠的色譜產(chǎn)品和來幫助色譜工作者來解決問題，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

詳細介紹

Astec CHIRALDEX B-PM SUPELCO 手性氣相色譜柱毛細管柱

CD Type: β (beta)
Derivative: Perethylated (all available -OH grups ethylated)
Tep. Liits: -10 °C t 200 °C (istheral) r 220 °C (prgraed)

Incrprates a phase cnsisting f a 2,3,6-tri-O-ethyl derivative f β-cycldextrin. This phase exhibits brad chiral selectivity and is gd fr terpenes and tertiary aines.

The perethylated beta-cycldextrin is a statinary phase that has indicated a ptential t separate a wide variety f raceates. Many f thse separatins are better reslved n ther CHIRALDEX phases based n lwer retentin, better selectivity and greater efficiency. What the PM des especially well are se hydrcarbns like terpenes, certain underivatized alchls and dils and se analytes with plar grups like tertiary aines.

Features:

Brad chiral selectivity
Strng inclusin/size selectivity
Beta st selective f cycldextrins

Mechanis Observatins:

Inclusin a dinant echanis
Highest teperature stability f CHIRALDEX phases alng with the DM

Size Selectivity:

Se size selectivity is evident with the perethylated phase. The beta fr will cver a brad range f lecule sizes.

Astec CHIRALDEX B-PM SUPELCO 手性氣相色譜柱毛細管柱

訂貨信息：

Prduct #	Descriptin
76023AST	Astec^? CHIRALDEX^? B-PM 毛細管氣相色譜柱 L × I.D. 30 × 0.25 , d_f 0.12 μ
76025AST	Astec^? CHIRALDEX^? B-PM 毛細管氣相色譜柱 L × I.D. 50 × 0.25 , d_f 0.12 μ