Nacalai Tesque Inc.

Core-shell particles consist of a nonporous core inside a porous shell. By using these core-shell particles, one can achieve sharper peaks compared to fully porous silica gel particles of the same diameter with half the back pressure. For example, the CosmoCore 2.6C18 delivers performance equivalent to sub-2 µm particles at faster flow rate and analysis time while maintaining a lower back pressure. 

Dr Maisch

Already in 1996 Dr Maisch introduced ReproSil-Pur: this ultra pure Silica-family contains HPLC phases for reversed- and normal-phase chromatography with particles from 3 until 60 µm, with a purity higher than 99,999%. Also Turbo phases were introduced. These pure columns are packed with 1,5 µm particles and allow separations in less than 60 seconds. In addition the patented capillary guard system FixGuards, fitting to every conventional column which need no extra holder and have the advantage that they are completely free of dead volume originate from Dr Maisch.

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ES Industries

ES Industries offers the HPLC chromatographer an important source for high performance bonded phases and packing materials. The Chromegabond materials produced at the New Jersey facility represent the state-of-the-art in bonding chemistry technology. These Chromegabond phases were developed to provide unique performance characteristics to enable the most demanding separations. The product range offers virtually all silica chemistry techniques and selectivities available today.

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