XTerra Shield RP18 Column, 125Å, 3.5 µm, 3 mm X 100 mm, 1/pk

The Waters XTerra Shield RP18 Column offers greater pH stability for your analysis as compared to a silica-based column. The analytical column is a general-purpose, hybrid-based, reversed-phase C18 column with incorporated polar group technology from Waters, which enhances peak shape performance for highly basic chemicals. Being the first commercially available alternative to silica-based column technology, the Waters XTerra range of reversed-phase HPLC columns is an essential component of any lab.

The Waters proprietary organic/inorganic Hybrid Particle Technology is utilized by the XTerra Shield RP18 Column (HPT). You can do this to get around one of the major drawbacks of silica-based reversed-phase packing materials, which is their hydrolytic instability at high pH.

Take advantage of the mechanical strength, extremely spherical shape, purity, pore dimensions, surface area, and capacity to customize particle size, pore dimensions, surface area, and surface chemistry that the XTerra Shield RP18 Column offers over its silica competitors. The lab equipment accomplishes this by utilizing conventional bonding agents. As a result, it is a versatile piece of lab equipment that can give optimal shape performance for extremely basic chemicals while maintaining excellent separation efficiency and increased pH stability.

With one significant exception, the process used to make the high-purity methyl hybrid material used in the XTerra Shield RP18 column is identical to that used to make high-purity silica. However, the XTerra material is created by the mixed condensation of two high-purity monomers as opposed to one. The Hybrid Particle Synthesis of the XTerra Shield RP18 columns is carried out using tetraethoxysilane (TEOS) and methyltriethoxysilane (MTEOS).

We recommend that you protect your column from the interference of unwanted contaminants using the XTerra Shield RP18 VanGuard Cartridge, 125Å, 3.5 µm, 2.1 mm X 5 mm, 3/pk. The cartridge is made using the exact same packing materials that are used in the column, making them ideally suited to work together. It works by preventing any chemical or particulate matter from entering the mobile phase, increasing the lifetime of the column and enabling better analysis results.