DIONEX/英国 品牌
代理商厂商性质
上海所在地
PE光度计钨灯LAMBDA光源B0114620
面议巴罗克Biologix 1.5ml 白盖 冻存管
面议巴罗克BIOLOGIXBiologix 1µl 接种环
面议泰国进口一次性施睿康乳胶检查手套
面议泰国施睿康无粉丁晴手套科研实验室手套
面议10000ml DURAN® 实验室玻璃瓶蓝盖试剂瓶德国DURANDURAN
面议81-8204巴罗克2ml冻存管透明可站立
面议81-8204巴罗克2ml冻存管带书写区和印刷刻度
面议81-8204巴罗克2ml冻存管带书写区和印刷刻度
面议81-8204 巴罗克 白色2ml冻存管 管底可站立
面议巴罗克试剂槽独立包装25-1100 白色100ml
面议巴罗克 100ml试剂槽灭菌独立包装25-1100
面议Achieve high resolution separations of trace oxyhalides and inorganic anions in drinking water using the Thermo Scientific? Dionex? IonPac? AS27 hydroxide-selective anion-exchange column. The selectivity of the Dionex IonPac AS27 column has been optimized for trace level analysis of bromate in the presence of ppm levels of ethylenediamine (EDA). EDA is used as a preservative in some drinking water samples and can cause interference of early eluting peaks, including bromate. The high resolution, high capacity and selectivity of the Dionex IonPac AS27 column allows the determination of trace bromate in drinking water without sample pretreatment or preconcentration. The Dionex IonPac AS27 columns meets the performance requirements of US EPA Methods 300.0 and 300.1.
The Dionex IonPac AS27 column is available in three formats: 4 × 250 mm, 2 × 250 mm and 0.4 × 250 mm.The Dionex IonPac AS27 Capillary Column is packed with the same material as the equivalent standard bore version (providing the same performance as a 4 mm column), but requires only 1/100th the eluent flow rate.The capillary format provides the advantage of significantly reduced eluent consumption, which helps reduce operating costs.
The Dionex IonPac AS27 column is designed for the analysis of oxyhalides and common inorganic anions including fluoride, chlorite, bromate, chloride, nitrite, bromide, chlorate, nitrate, phosphate, and sulfate in drinking water, groundwater, wastewater, and other diverse sample matrices. The Dionex IonPac AS27 column allows analysis of most drinking water preserved with EDA without sample pretreatment or preconcentration. This column is ideally used with an RFIC system for automatic eluent generation.
The key application for the Dionex IonPac AS27 column is the determination of trace bromate in drinking water matrices that have been preserved with EDA using a potassium hydroxide gradient with suppressed conductivity detection. The selectivity of the Dionex IonPac AS27 column ensures that bromate can be quantified at low μg/L concentrations using suppressed conductivity detection even in the presence of very high concentrations of chloride, sulfate, and carbonate as well as EDA.
The Dionex IonPac AS27 column has similar selectivity and capacity compared to the Dionex IonPac AS19 column and most applications can be performed on either column. However, for samples preserved with EDA, the Dionex IonPac AS27 column is recommended.
The Dionex IonPac AS27 column produces under 3000 psi at the standard flow rates and can be operated on any Dionex IC system, such as the Thermo Scientific? Dionex? ICS-5000+ HPIC? or the Thermo Scientific Dionex ICS-4000 Capillary HPIC system.
Note: Use the Thermo Scientific? Dionex? AERS? 500 Anion Electrolytically Regenerated Suppressor with the Dionex IonPac AS27 column for eluent suppression.
Dionex IonPac AS27 Anion-Exchange Column Specifications | |
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Dimensions | Dionex IonPac AS27 Analytical Column: 2 × 250 mm and 4 × 250 mm Dionex IonPac AG27 Guard Column: 2 × 50 mm and 4 × 50 mm Dionex IonPac AS27 Capillary Column: 0.4 × 250 mm Dionex IonPac AG27 Capillary Guard Column: 0.4 × 50 mm |
Maximum operating pressure | 3000 psi |
Ion-exchange group | Functional Group: Alkanol quaternary ammonium ion |
Functional group characteristics | Ultralow hydrophobicity |
Capacity | 2.2 ?eq (0.4 × 250 mm capillary column) 0.05 ?eq* (0.4 × 50 mm capillary guard column) 55 ?eq (2 × 250 mm analytical column) 1.25 ?eq* (2 × 50 mm guard column) 220 ?eq (4 × 250 mm analytical column) 5 ?eq* (4 × 50 mm guard column) *Guards are packed with a low-capacity microporous resin. |
Column construction | PEEK with 10-32 threaded ferrule-style end fittings. All components are nonmetallic. |
Substrate characteristics | Bead Diameter and Pore Size: 6.5 ?m (0.4 x 250, 2 × 250 and 4 × 250 mm); super macroporous resin (2000 ?) 10 ?m (0.4 x 50, 2 × 50 and 4 × 50 mm); microporous resin (<1 ?) Cross-Linking (%DVB): 55% |
phase compatibility | pH 0–14; 0–100% HPLC solvents |
Analytical Columns | |
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Dionex IonPac AS27 Analytical Column (4 × 250 mm) | 088437 |
Dionex IonPac AS27 Analytical Column (2 × 250 mm) | 088439 |
Dionex IonPac AS27 Capillary Column (0.4 × 250 mm) | 088441 |
Guard Columns | |
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Dionex IonPac AG27 Guard Column (4 × 50 mm) | 088438 |
Dionex IonPac AG27 Guard Column (2 × 50 mm) | 088440 |
Dionex IonPac AG27 Capillary Guard Column (0.4 × 50 mm) | 088442 |