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參考價(jià)	面議

美國戴安Dionex

抑制器

發(fā)生罐

樣品瓶

戴安液相色譜柱

戴安公司生產(chǎn)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(shù)優(yōu)勢和方法已廣泛地應(yīng)用于各個(gè)領(lǐng)域，其*達(dá)80%。與離子色譜相關(guān)的文章有90%均出自戴安公司生產(chǎn)的離子色譜儀。　　
戴安公司的快速溶劑萃取儀15分鐘之內(nèi)僅用15毫升溶劑既可完成對(duì)10g樣品的萃取，該技術(shù)已在環(huán)境、藥物、食品和聚合物工業(yè)等領(lǐng)域得到廣泛應(yīng)用。

詳細(xì)介紹

Ideal Column for the Separation of Neutral and Acidic Monosaccharides

The CarboPac^? PA1 is an anion-exchange column for the separation of mono-, disaccharides, and specific oligosaccharides using an isocratic eluent. Sialic acid analysis has also been demonstrated on this column.

General-purpose column for isocratic determination of monosaccharides and disaccharides
Detection by pulsed amperometric detection; no derivatization needed
Approved for use in a variety of official methods for the analysis of foods

The unique MicroBead^? pellicular structure of the CarboPac PA1 resin gives it stability from pH 0–14 at all concentrations of buffer salts. The pellicular resin structure allows excellent mass transfer resulting in fast gradient reequilibration.

The CarboPac PA1 column is used with pulsed amperometric detection; no derivatization is required. Sensitivity on the PA1 is not as high as with the CarboPac PA20 or PA10 for monosaccharide analysis. Thus the CarboPac PA1 is well suited for the analysis of foods for nutritional labeling. The CarboPac PA1 has been approved for use in a number of official methods.

CarboPac PA1 Column for Routine Carbohydrate Analysis Specifications
Dimensions	CarboPac PA1 Analytical Column: 4 × 250 mm and 2 × 250 mm CarboPac PA1 Guard Column: 4 × 50 mm and 2 × 50 mm CarboPac PA1 Semipreparative Column: 22 × 250 mm
Maximum operating pressure	4000 psi (27.9 MPa)
Temperature range	4–55 °C Recommended operating temperature: ambient
Typical operating conditions	1500 psi at 1.0 mL/min (analytical and guard columns) Recommended flow rate: 1.0 mL/min (for 4 × 250 mm)
phase compatibility	pH 0–14; up to 2% of common HPLC solvents. Acetate or hydroxide eluents only.
Resin composition	10-μm-diameter substrate (polystyrene 2% cross-linked with divinylbenzene) agglomerated with 500-nm MicroBead quaternary ammonium functionalized latex (5% cross-linked).
Anion-exchange capacity	Approximay 100 μeq/column (4 × 250 mm analytical column)
Column construction	PEEK with 10-32 threaded-ferrule-style end fittings. All components are nonmetallic.

Analytical Columns
CarboPac PA1 Analytical Column (2 x 250 mm)	057178
CarboPac PA1 Analytical Column (4 X 250 mm)	035391
CarboPac PA1 Semi-Preparative Column (9 x 250 mm)	039686
CarboPac PA1 Semi-Preparative Column (22 x 250 mm)	SP2866