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.
53838-U
Ascentis® Express 90Å C8 (2.7 μm) HPLC Columns
L × I.D. 15 cm × 4.6 mm, HPLC Column
Synonim(y):
Core-shell (SPP) Fused Core C8 HPLC column
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1 EA
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About This Item
Kod UNSPSC:
41115700
eCl@ss:
32110501
NACRES:
SB.52
4110,00 zł
Skontaktuj się z Obsługą Klienta, aby uzyskać informacje na temat dostępności
Polecane produkty
Nazwa produktu
Ascentis® Express C8, 2.7 μm HPLC Column, 2.7 μm particle size, L × I.D. 15 cm × 4.6 mm
Materiały
stainless steel column
Poziom jakości
agency
suitable for USP L7
linia produktu
Ascentis®
Właściwości
endcapped
producent / nazwa handlowa
Ascentis®
opakowanie
1 ea of
Parametry
60 °C temp. range
600 bar max. pressure (9000 psi)
metody
HPLC: suitable
LC/MS: suitable
UHPLC-MS: suitable
UHPLC: suitable
dł. × śr. wewn.
15 cm × 4.6 mm
powierzchnia
135 m2/g
zanieczyszczenia
<5 ppm metals
Matryca
Fused-Core particle platform
superficially porous particle
grupa aktywna macierzy
C8 (octyl) phase
wielkość cząstki
2.7 μm
wielkość porów
90 Å
Zakres roboczy pH
2-9
Zastosowanie
food and beverages
metoda separacji
reversed phase
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Opis ogólny
Ascentis Express HPLC columns, through the use of Fused-Core® particle technology, can provide you with both the high speed and high efficiencies of sub-2 μm particles while maintaining lower backpressures. The combination of high efficiency and low backpressure benefits UPLC® (or other ultra high pressure system) users, as well as conventional HPLC users.
Visit the Ascentis Express home page for more information on this new column technology.
Visit the Ascentis Express home page for more information on this new column technology.
Zastosowanie
- Recent trends in ultra-fast HPLC: new generation superficially porous silica columns.: This review explores the evolution and performance of superficially porous silica columns in high-performance liquid chromatography (HPLC), including those similar to the Ascentis Express C8, 2.7 μm. The focus is on the technology′s impact on enhancing analytical speed and efficiency (Ali et al., 2012).
- Development and validation of an HPLC-MS/MS method to determine clopidogrel in human plasma. Use of incurred samples to test back-conversion.: This study details the development of an HPLC-MS/MS analytical method using columns such as the Ascentis Express C8, 2.7 μm, aimed at quantifying clopidogrel in plasma, demonstrating the column′s utility in clinical pharmacokinetic assessments (Silvestro et al., 2010).
Informacje prawne
Ascentis is a registered trademark of Merck KGaA, Darmstadt, Germany
Fused-Core is a registered trademark of Advanced Materials Technology, Inc.
UPLC is a registered trademark of Waters
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wymagane, ale niedostarczone
Kod klasy składowania
11 - Combustible Solids
Klasa zagrożenia wodnego (WGK)
WGK 3
Temperatura zapłonu (°F)
Not applicable
Temperatura zapłonu (°C)
Not applicable
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This paper proposes a simple and selective RP-HPLC method for the determination of process impurities and degradation products (degradants) of atazanavir sulfate (ATV) drug substance. Chromatographic separation was achieved on Ascentis(®) Express C8, (150mm×4.6mm, 2.7μm) column thermostated at 30°C under
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Quantitative methods using LC-MS/MS allow achievement of adequate sensitivity for pharmacokinetic studies with clopidogrel; three such methods, with LLOQs as low as 5 pg/mL, were developed and fully validated according to the well established FDA 2001 guidelines. The chromatographic separations
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Produkty
When a C18 doesn′t give the desired separation, or your sample contains compounds that are known to be difficult to retain or resolve on a C18, consider changing to an Ascentis® Express C8 column.
Protokoły
-methylcarbamate 10 μg/mL; Diuron; Propham; Siduron; Methiocarb, analytical standard; Linuron 10 μg/mL; Swep 10 μg/mL; Chlorpropham 10 μg/mL; Barban; Neburon
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Can I use Ascentis Express on any type of HPLC system?
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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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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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What flow rate should I use with Ascentis® Express HPLC Columns?
1 answer-
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.
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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 I use Ascentis Express on a UHPLC system?
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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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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 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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