Based on the minimum in the van Deemter curves, higher flows than 5um particle columns are required in order to maximize Ascentis Express column efficiency. The suggested starting point for flow rate for Ascentis Express columns: 1.6 mL/min for 4.6 mm ID; 0.8 mL/min for 3.0 mm ID; and 0.4mL/min for 2.1 mm ID.
53931-U
Ascentis® Express 90 Å RP-Amide (2.7 μm) HPLC Columns
L × I.D. 15 cm × 4.6 mm, HPLC Column
Sinónimos:
Core-shell (SPP) Fused Core polar embedded HPLC column
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About This Item
Código UNSPSC:
41115700
eCl@ss:
32110501
NACRES:
SB.52
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Nombre del producto
Ascentis® Express RP-Amide, 2.7 μm HPLC Column, 2.7 μm particle size, L × I.D. 15 cm × 4.6 mm
Materiales
stainless steel column
Nivel de calidad
Agency
suitable for USP L60
Línea del producto
Ascentis®
Características
endcapped
fabricante / nombre comercial
Ascentis®
envase
1 ea of
Parámetros
60 °C temp. range
600 bar max. pressure (9000 psi)
técnicas
HPLC: suitable
LC/MS: suitable
UHPLC-MS: suitable
UHPLC: suitable
L × D.I.
15 cm × 4.6 mm
superficie
135 m2/g
impurezas
<5 ppm metals
Matriz
Fused-Core® particle platform
superficially porous particle
grupo activo de la matriz
amide, alkyl phase
tamaño de partícula
2.7 μm
tamaño de poro
90 Å
Intervalo de pH operativo
2-9
aplicaciones
food and beverages
técnica de separación
reversed phase
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Categorías relacionadas
Aplicación
Ascentis® Express RP-Amide, 2.7 Micron HPLC Column may be used for the separation of:
- Monoethanolamine (MEA) and its degradation products in synthetic flue gas mixtures utilized during CO2 capture in hybrid post-combustion capture with oxygen-enriched combustion, prior to their quantification by liquid chromatography-tandem mass spectrometry (LC-MS/MS) equipped with electrospray ionization (ESI) source.[1]
- (2-Hydroxyethyl) ethylenediamine (HEEDA), a degradation product of MEA, in the CO2 mixture based on post-combustion CO2 capture systems, prior to its determination by LC-MS.[2]
Información legal
Ascentis is a registered trademark of Merck KGaA, Darmstadt, Germany
Fused-Core is a registered trademark of Advanced Materials Technology, Inc.
Aplicación
Referencia del producto
Descripción
Precios
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cartucho de precolumna
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obligatorio pero no suministrado
Referencia del producto
Descripción
Precios
Código de clase de almacenamiento
11 - Combustible Solids
Clase de riesgo para el agua (WGK)
WGK 3
Punto de inflamabilidad (°F)
Not applicable
Punto de inflamabilidad (°C)
Not applicable
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Certificados de análisis (COA)
Lot/Batch Number
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Los clientes también vieron
Accelerated MEA degradation study in hybrid CO2 capture systems.
Sanna A, et al.
Energy Procedia, 63, 745-749 (2014)
Corrosion and degradation in MEA based post-combustion CO2 capture.
Fytianos G, et al.
International Journal of Greenhouse Gas Control, 46, 48-56 (2016)
Michael T Furlong et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 926, 36-41 (2013-04-02)
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Today sub-2 microm packed columns are very popular to conduct fast chromatographic separations. The mass-transfer resistance depends on the particle size but some practical limits exist not to reach the theoretically expected plate height and mass-transfer resistance. Another approach applies
Artículos
Innovative particle technology and RP-Amide bonding chemistry enhance chromatography performance for improved peak shape and resolution.
Innovative particle technology and RP-Amide bonding chemistry enhance chromatography performance for improved peak shape and resolution.
Innovative particle technology and RP-Amide bonding chemistry enhance chromatography performance for improved peak shape and resolution.
Innovative particle technology and RP-Amide bonding chemistry enhance chromatography performance for improved peak shape and resolution.
Chromatograms
application for HPLCapplication for HPLCapplication for HPLC-
What flow rate should I use with Ascentis® Express HPLC Columns?
1 answer-
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Do I need special fittings and tubing to connect Ascentis® Express HPLC Columns?
1 answer-
While operating pressures may not exceed the 400 bar (6,000 psi) capability of your traditional instruments, sustained pressures of about 200 bar (3,000 psi) will exceed the recommended pressure for conventional PEEK tubing and fittings at the column inlet. We recommend changing to stainless steel fittings in all high pressure locations and have designed special High Performance HPLC Fittings/Interconnects that will stay tight at pressures of 1,000 bar (15,000 psi) or greater, even when elevated column temperatures are employed.
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How can I measure my instrument bandwidth (IBW) and determine what Ascentis® Express HPLC Columns can be used with minimal efficiency loss created by too much internal instrument volume?
1 answer-
The Guide to Dispersion Measurement has simple instructions on how to measure IBW and can be found at sigma-aldrich.com/express.
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Can Ascentis® Express HPLC Columns be used for LC-MS?
1 answer-
Express Fused-Core™ particles were designed with LC-MS in mind. Even extremely short column lengths exhibit sufficient plate counts to show high resolving power. The flat van Deemter plots permit resolution to be maintained at very high flow rates to maximize sample throughput. All Ascentis stationary phases have been evaluated for MS compatibility during their development, and the Express phases are no exception. You can expect extremely low column bleed and background while maintaining longest possible column lifetime. A bonus of Ascentis Express columns for high throughput UHPLC and LC-MS is that they are extremely rugged and highly resistant to plugging, a very common failure mode for competitor columns.
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Is there anything special I need to do to my HPLC system to use Ascentis Express?
1 answer-
Nothing special is required to use Ascentis Express HPLC columns. To obtain the full benefits of Ascentis Express, one should minimize dispersion or instrument bandwidth in the HPLC system (tubing, detector flow cell) as well as confirm the detector response system is set at a fast level. For more information, request Guidelines for Optimizing Systems for Ascentis Express Columns (T407102)
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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Can I use Ascentis Express on a UHPLC system?
1 answer-
Yes. Ascentis Express columns are packed in a way making them suitable for these ultra high pressure instruments. In fact, Ascentis Express outperforms sub-2 μm micron columns on many applications since Ascentis Express provides the benefits of sub-2 μm particles but at much lower back pressure. These benefits include the capability of providing fast HPLC and higher resolution chromatography. The Fused-Core particle consists of a 1.7 μm solid core and a 0.5 μm porous shell. A major benefit of the Fused-Core particle is the small diffusion path (0.5 μm) compared to conventional fully porous particles. The shorter diffusion path reduces axial dispersion of solutes and minimizes peak broadening.
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What is the carbon load for Ascentis Express RP-Amide?
1 answer-
Carbon load which is commonly referred to as %Carbon is misleading and not meaningful for Ascentis Express. Since Fused-Core™ particle is unique in the sense that it has a solid core and porous shell, the %Carbon number can not be compared to traditional porous particles. The carbon coverage for Ascentis Express RP-Amide is 3.0 micromoles/meter-squared.
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Can I use Ascentis Express on any type of HPLC system?
1 answer-
Ascentis Express HPLC columns are capable of use on standard HPLC systems as well as UHPLC systems. Columns are packed in high pressure hardware capable of withstanding the pressures used in UHPLC systems.
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