VWR® Hitachi LachromUltra II C18 U/HPLC Column, 120 A, 1.9 um, 3 mm ID x 100 mm Length, 1/Pk - 889-0905

LaChromUltra II Series

VWR® Hitachi LachromUltra II C18 UHPLC Column, 120Ã, 1.9µm, 3mm ID x 100mm Length, 1/Pk

Part Number: 889-0905

• Has the same properties as LaChrom II (3 µm,5 µm) but in different sizes.
• It is easy to interchange analysis methods between UHPLC and HPLC.
• High durability and pressure resistance enable performance. 
• The LachromUltra II C18 columns enable both ultrahigh-speed analysis and ultrahigh-resolution analysis.
• High resolution column for UHPLC applications: Number of theoretical plates of 50,000 per column
• Octadecyl silane chemically bonded to porous or non-porous silica or ceramic micro-particles, 1.5 to 10 µm in diameter, or a monolithic rod

Specifications:

It has been generally accepted that high resolution analyses of impurities and structural analogs of synthetic compounds, such as medicines and chiral molecules, are challenging, even with UHPLC. Now, however, the newly developed high resolution column, LaChromUltra II, designed for UHPLC applications with system pressures up to 140 MPa can achieve more advanced separation analyses and industry-leading performance.

An inorganic-organic composite type silica material, the physical and chemical durability of which is improved relative to the conventional silica gel particle, is adopted for the LaChromUltra II column. In order to fully utilize the high system pressure of UHPLC, 250 mm long columns with 1.9 μm particles can be lined up in series. The useful application of UHPLC can be expanded to high resolution analyses, and is not limited to ultra high-speed analyses.

This C18 column, with a characteristic of the excellent peak symmetry, has a wide application range because of the superior alkali resistivity as well as the low adsorption. Mobile phases with a wide pH range between 1 and 12 can be used and therefore, it is possible to freely control the retention and selectivity for ionic compounds

The LaChromUltra II columns are packed with composed material comprised of organic-inorganic silica, providing improved physical and chemical durability over that of conventional silica gel particles. To maximize the high-pressure performance inherent to UHPLC, a 250-mm-long column with 1.9-µm particles has been added to the product lineup.

Features

• The physical and chemical durability of organic-inorganic silica is improved over that of conventional silica, acieving high-pressure tolerance.
• Based on the performance, a 250-mm-long column has been added to the product lineup.
• The high-resolution columns with theoretical plate number 50,000 fully work in the application of relate- compound analysis, multicomponent analysis, and more. Furthermore, by connecting 2 pieces of 250-mm columns, ultrahigh resolution can be achieved with theoretical plate number 100,000.

HITACHI LaChromUltra II C18 (1.9 µm) Columns

High resolution columns that are capable of attaining 50,000 theoretical plates will prove their capability in demanding applications such as isomer separation, multi-component analysis, etc. Furthermore, with the ChromasterUltra Rs it is possible to attain even higher resolution performance (as high as 100,000 theoretical plates) by connecting two columns of 250 mm in length.

The LaChromUltra II (1.9 μm) and LaChrom II (3 μm and 5 μm) columns are superior in not only their system pressure tolerance, but also their peak profile and alkali resistance performance owing to polymeric surface modification. Therefore, these columns allow a broad selection of eluent at different pH values ranging from 1 to 12. Since a wide range of choices in mobile phase composition is available to the user, the retention and selectivity of ionic compounds can be freely controlled when establishing analytical conditions.