Du sökte efter: purospher+star

Leverantör: Merck

Beskrivning: Purospher® STAR HPLC columns based on highest purity silica are also available for normal phase separations.

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Leverantör: Merck

Beskrivning: Available with optimised 2 μm particulate silica, these UHPLC columns, based on Purospher® STAR RP-18 endcapped, are ideal for ultra-fast applications, where resolution, sensitivity and sample throughput are crucial. They are the first choice for high throughput screening and QC analyses, process monitoring, method development and LC-MS applications. Due to its balanced selectivity, Purospher® STAR RP-18 endcapped UHPLC columns cover almost all demanding separations with tailing-free chromatograms. Purospher® STAR RP-18 endcapped 3 μm columns are recommended for difficult samples where clogging and back pressure present an issue.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Purospher® STAR RP-8 endcapped, like Purospher® STAR RP-18 endcapped, is based on high purity silica and has an almost complete surface coverage. Thus, Purospher® STAR RP-8 provides excellent peak symmetry for acidic, basic and even chelating compounds, highest column efficiency in terms of the number of theoretical plates, and exceptional stability from pH 1,5 to 10,5. In addition, they are ideal for a wide range of applications. As the sorbent is less hydrophobic than Purospher® STAR RP-18 endcapped, analytes will typically elute faster on the C8 phase. Purospher® STAR RP-8 endcapped provides enhanced selectivity for positional isomers and symmetrical peak shapes for strongly basic and less hydrophobic compounds.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Purospher® STAR Phenyl HPLC columns show an enhanced selectivity compared to standard alkyl phases. They are the first alternative to RP-8 or RP-18 selectivities for separation of aromatic compounds, fatty acids, purines and pyrimidines due to π-π interactions. The new Purospher® STAR Phenyl columns are based on high purity silica particles providing symmetrical peaks for basic compounds, high stability and excellent reproducibility.

Leverantör: Merck

Beskrivning: Fast method development of complex samples across the pH range from 1,5 to 10,5 with different mobile phases and temperature conditions.
Purospher® STAR RP-18 endcapped HPLC columns are designed for universal use. Basic, neutral and metal-chelating compounds can easily be separated with simple mobile phases – naturally without peak tailing. Thanks to its outstanding performance and stability, Purospher® STAR RP-18 endcapped offers maximum flexibility in method development. Robust methods can be developed over the entire pH range from 1,5 to 10,5. High pH-stability allows the separation of strongly basic compounds with alkaline eluents. The combination of high purity silica, best all-round retention characteristics, outstanding pH stability up to pH 10,5, and suitability for up to 100% aqueous mobile phases, make Purospher® STAR RP-18 endcapped an all-round top performance column, almost universal in its range of applications.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Stainless steel Hibar® columns are complete with endfittings. These columns are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: Merck

Beskrivning: <B>Purospher® RP-18</B> är framtagen för separation av problematiska basiska föreningar med enkla neutrala eluenter. Med Purospher® RP-18 kan dessutom hydrofila föreningar separeras med vattenbaserad mobilfas. Purospher® RP-18 är baserad på en högren, metallfri kiseldioxid. Den kemiska flerstegsmodifieringen och ytdeaktiveringen ger eluering utan svansning med basiska och kelaterade föreningar. Purospher® RP-18 lämpar sig inte för separation av sura föreningar. Purospher® RP-18:s goda kemiska stabilitet möjliggör långtidsanvändning av mobilfas som håller pH 8.

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Leverantör: Merck

Beskrivning: Stainless steel LiChroCART® cartridges are available with various types of Purospher® sorbents.

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Leverantör: VWR Collection

Beskrivning: Keyboard, VWR®, För: Star Blender