婷婷五月高清中文字幕,国产亚洲精品精品2020

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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

美國戴安Dionex Acclaim Surfactant LC Columns 液相色譜柱

Acclaim Surfactant LC Columns

Outstanding Separation of All Classes of Surfactants

The Thermo Scientific Acclaim^™ Surfactant columns are high-efficiency silica-based HPLC columns for separating a wide variety of surfactants, including anionic, cationic, nonionic, and amphoteric surfactants. Due to their novel chemistry, these columns exhibit a unique polarity that provides significantly improved resolution for individual oligomers of ethoxylated surfactants, compared with conventional C18 columns.

Ideal selectivity for simultaneous separation of anionic, nonionic, cationic, and amphoteric surfactants
Well suited for the determination of cationic surfactants
Capable of retaining highly hydrophilic compounds, such as hydrotropes
Excellent resolution for ethoxylated surfactants
Rugged separations under a variety of conditions
Methods compatible with various ELSD or UV detectors

The Acclaim Surfactant columns can be used with evaporative light scattering detectors (ELSD), suppressed conductivity detectors (SCD), and UV-Vis detectors (UV). These columns are resistant to dewetting under highly aqueous phase conditions, and thus can be used to provide excellent resolution between strongly hydrophilic compounds, such as isomers of xylene sulfonate.

Broad Range of Applications

Surfactants are widely used in industrial, agricultural, and pharmaceutical markets, and in products as diverse as pesticides, detergents powders, petroleum products, cosmetics, and pharmaceuticals. The Acclaim Surfactant columns have been designed specifically for the HPLC separation of these surfactants.

The Acclaim Surfactant columns can be used for the HPLC separation of anionic surfactants (alkylbenzenesulfonates, alkyl sulfates, alkylether sulfates) and cationic surfactants (alkyl quaternary ammonium salts, benzylalkylammonium salts, pyridinium salts, and quaternary imidazolium compounds) nonionic surfactants, and polyethylene glycols (PEGs).

技術(shù)參數(shù)：

Acclaim Surfactant Column Specifications
Metal impurity (Na, Fe, Al)	<10.0 ppm Total Metal <3.0 ppm Individual Metal
Pore volume	0.9–1.0 mL/g
Average pore diameter	120 ?
Particle size distribution (40/90)	<1.3
Total carbon content	12%
Carbon chain length	C18
Particle shape	Spherical
Endcapped	Yes
Surface area	300 m²/g
pH range	2.5–7.5
Temperature limit	< 60 ^oC
Starting material	Ultrapure silica
Particle size	5 ?m

訂購信息：

Surfactant Analytical Columns
Acclaim Surfactant, 3?m Analytical, (2.1 x 150mm)	070085
Acclaim Surfactant, 3?m Analytical, (3.0 x 150mm)	070084
Acclaim Surfactant, 5 ?m, Analytical, (2.1 x 150mm)	068123
Acclaim Surfactant, 5 ?m Analytical, (4.6 x 150 mm)	063201
Acclaim Surfactant, 5 ?m Analytical, (4.6 x 250 mm)	063203

Surfactant Guard Columns
Acclaim Surfactant, 5?m, Guard Cartridges, (2.1 x 10mm), 2 ea; requires holder 069580	069693
Acclaim Surfactant, 5?m Guard Cartridges (3 x 10mm), 2ea, requires holder 069580	071991
Acclaim Surfactant, 5 ?m Guard Cartridges, (4.6 x 10 mm), 2 ea (use V-2 Holder)	069701
Acclaim SST Guard Cartridge Holder V-2	069580
Acclaim Guard Kit (Holder and coupler) V-2	069707
Guard to Analytical Column Coupler V-2	074188

Surfactant Guard Columns
Acclaim Surfactant, 5?m, Guard Cartridges, (2.1 x 10mm), 2 ea; requires holder 069580 069693
Acclaim Surfactant, 5?m Guard Cartridges (3 x 10mm), 2ea, requires holder 069580 071991
Acclaim Surfactant, 5 ?m Guard Cartridges, (4.6 x 10 mm), 2 ea (use V-2 Holder) 069701
Acclaim SST Guard Cartridge Holder V-2 069580
Acclaim Guard Kit (Holder and coupler) V-2 069707
Guard to Analytical Column Coupler V-2 074188