Supplier: Merck

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

SDS

Supplier: Merck

Description: 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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Supplier: Merck

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

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Supplier: Merck

Description: 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.

SDS

Supplier: Merck

Description: 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.

Supplier: Merck

Description: 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.

SDS

Supplier: Merck

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

SDS

Supplier: Merck

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

SDS

Supplier: Merck

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

SDS

Supplier: Merck

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

SDS

Supplier: Merck

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

SDS

Supplier: Merck

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

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Supplier: Merck

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

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Supplier: Merck

Description: <B>Purospher® RP-18</B> is designed for the separation of problematic basic compounds with simple neutral eluents. In addition Purospher® RP-18 allows the separation of hydrophilic compounds with aqueous mobile phase. Purospher® RP-18 is based upon a high purity, metal-free silica. The multi-step chemical modification and deactivation of the surface, and the polar endcapping, enables a peak-tailing-free elution of basic and chelating compounds. Purospher® RP-18 is not suitable for the separation of acidic compounds. The good chemical stability of Purospher® RP-18 enables the use of mobile phase conditions at pH 8 for a long period of time.

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Supplier: Merck

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

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Supplier: VWR Collection

Description: Micro Star 21 and 21R microcentrifuges combine power, versatility and convenience in a safe, compact, easy to use laboratory instrument. Both the ventilated Micro Star 21 and the refrigerated Micro Star 21R are excellent choice for routine sample preparation process and for high-end research applications. The special biocontainment rotor lid, for one-click rotor opening and closing, shortens retrieval time compared to screw on lids.