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參考價	面議

美國戴安Dionex

抑制器

發生罐

樣品瓶

戴安液相色譜柱

戴安公司生產的儀器主要有離子色譜儀、高效液相色譜儀、快速溶劑萃取儀和氨基酸直接分析儀。其中離子色譜儀憑借著雄厚的技術優勢和方法已廣泛地應用于各個領域，其*達80%。與離子色譜相關的文章有90%均出自戴安公司生產的離子色譜儀。　　
戴安公司的快速溶劑萃取儀15分鐘之內僅用15毫升溶劑既可完成對10g樣品的萃取，該技術已在環境、藥物、食品和聚合物工業等領域得到廣泛應用。

詳細介紹

Thermo Scientific Dionex

IonPac AS7 Specialty Anion-Exchange Column

For Separation of a Wide Range of Polyvalent Anions

The IonPac^? AS7 separates a wide variety of polyvalent anions, including polyphosphates, polyphosphonates, and other polyvalent complexing agents such as EDTA and NTA using acidic eluent (eliminating metal interferences) with postcolumn derivatization and UV-Vis detection.

For polyvalent anions and chelating agents in complex sample matrices
Determines cyanide and sulfide using amperometric detection
Useful for hexavalent chromium in environmental matrices

The AS7 column has a unique polymer packing that provides superior performance for separating ionic and polar compounds. The patented packing offers high speed, high efficiency, and high loading capacity at moderate backpressures.

Note: The newer IonPac AS16 or AS20 column is recommended for polyphosphates.

IonPac AS7 Anion-Exchange Column Specifications
Maximum operating pressure	4000 psi (26 MPa)
phase compatibility	pH 0–14
Column construction	PEEK^? with internal style 10-32 threaded ferrule-style end fittings. All components are nonmetallic.
Substrate characteristics	Particle Diameter: 10 μm Cross-Linking (%DVB): 2%
Latex characteristics	Functional Group: Alkyl quaternary ammonium Latex Cross-Linking: 5% Latex Diameter: 530 nm Capacity (μeq/column): 100 μeq (4 x 250 mm) and 25 μeq (2 x 250 mm) Hydrophobicity: Medium-high
Analytical column dimensions	IonPac^? AS7 Column: 4 x 250 and 2 x 250 mm
Guard column dimensions	IonPac AG7 Column: 4 x 50 and 2 x 50 mm