53299-U
Ascentis® Express Peptide 160 Å ES-C18 (2.7 μm) HPLC Columns
L × I.D. 3 cm × 2.1 mm, HPLC Column
product name
Ascentis® Express Peptide ES-C18, 2.7 μm HPLC Column, 2.7 μm particle size, L × I.D. 3 cm × 2.1 mm
material
stainless steel column
Quality Level
Agency
suitable for USP L1
product line
Ascentis®
feature
endcapped: no
manufacturer/tradename
Ascentis®
packaging
1 ea of
parameter
≤100 °C temp. range
600 bar max. pressure (9000 psi)
technique(s)
HPLC: suitable
LC/MS: suitable
UHPLC-MS: suitable
UHPLC: suitable
L × I.D.
3 cm × 2.1 mm
surface area
90 m2/g
impurities
<5 ppm metals
matrix
Fused-Core particle platform
superficially porous particle
matrix active group
C18 (octadecyl) phase
particle size
2.7 μm
pore size
160 Å
operating pH range
1-9
separation technique
reversed phase
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Related Categories
General description
Legal Information
guard cartridge
related product
required but not provided
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
What is special about Ascentis Express?
Ascentis Express columns provide a breakthrough in HPLC performance. Based on Fused-Core particle technology, Ascentis Express provides the benefits of sub-2 μm particles but at much lower backpressure. 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.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
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.
What is special about product 53299-U Ascentis® Express Peptide ES C18 HPLC Column?
Product 53299-U Ascentis® Express Peptide ES C18 HPLC Column provides a breakthrough in HPLC performance. Based on Fused-Core particle technology, Ascentis® Express columns provide the benefits of sub-2 μm particles but at much lower backpressure. 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.
Are guard columns available for product 53299-U Ascentis® Express Peptide ES C18 HPLC Column?
Yes, we have guard columns available for product 53299-U Ascentis® Express Peptide ES C18 HPLC Column. Product 53500-U is the Ascentis® Express Guard Holder and Product 53536-U Ascentis® Express Peptide ES C18 Guard Cartridge is a package of three guard cartridges, 2.7 μm particle size, L 5mm × I.D. 2.1 mm .
Can I use product 53299-U Ascentis® Express Peptide ES C18 HPLC Column on any type of HPLC system?
Product 53299-U Ascentis® Express Peptide ES C18 HPLC Column HPLC columns is capable of use on standard HPLC systems as well as UHPLC systems. This column is packed in high pressure hardware capable of withstanding the pressures used in UHPLC systems.
Can I use product 53299-U Ascentis® Express Peptide ES C18 HPLC Column on a UHPLC system?
Yes. product 53299-U Ascentis® Express Peptide ES C18 HPLC columns are packed in a way making them suitable for these ultra high pressure instruments. In fact, product 53299-U Ascentis® Express Peptide ES C18 HPLC Column outperforms sub-2 μm micron columns on many applications since product 53299-U Ascentis® Express Peptide ES C18 HPLC Column 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.
What flow rate should I use with product 53299-U Ascentis® Express Peptide ES C18 HPLC columns?
Based on the minimum in the van Deemter curves, higher flows than 5um particle columns are required in order to maximize product 53299-U Ascentis® Express Peptide ES C18 HPLC 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.
Do I need special fittings and tubing to connect product 53299-U Ascentis® Express Peptide ES C18 HPLC ColumnExpress columns?
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.
Is there anything special I need to do to my HPLC system to use product 53299-U Ascentis® Express Peptide ES C18 HPLC Column?
Nothing special is required to use product 53299-U Ascentis® Express Peptide ES C18 HPLC Column. To obtain the full benefits of Ascentis® Express Column, 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 Performance with Ascentis® Express HPLC Columns (T407102).
Can product 53299-U Ascentis® Express Peptide ES C18 HPLC column be used for LC-MS?
Yes, 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 product 53299-U Ascentis® Express Peptide ES C18 HPLC Column 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.
How can I measure my instrument bandwidth (IBW) and determine what columns can be used with minimal efficiency loss created by too much internal instrument volume?
The Guide to Dispersion Measurement has simple instructions on how to measure IBW and can be found at sigma-aldrich.com/express.
What is the pressure rating for product 53299-U Ascentis® Express Peptide ES C18 HPLC Column?
This product 53299-U Ascentis® Express Peptide ES C18 HPLC Column is stable to operating pressures up to 600 bar (9000 psi)
What is the carbon load for product 53299-U Ascentis® Express Peptide ES C18 HPLC Column?
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 product 53299-U Ascentis® Express Peptide ES C18 HPLC column is 2 micromoles/meter-squared.
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Articles
Choose Ascentis® Express Peptide ES-C18 U/HPLC Columns based on Fused-Core® technology for fast and efficient separation of high-molecular weight compounds, such as peptides and small proteins. With a 2.7 µm particle size and rigorous testing, these columns offer reliable results and high efficiency.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
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