漂亮人妻被中出中文字幕久久_欧洲精品99毛片免费高清观看_国产成人精品无码免费看_欧美牲交黑粗硬大_久久精品国产亚洲av热一区

The StarCore columns feature silica particles with a core-shell structure, consisting of solid silica spheres and a porous material on the surface. This core-shell design offers a shorter mass transfer path for material separation, reducing axial diffusion and resulting in higher column efficiency. It provides better resolution for the separation of complex samples. The solid core offers a robust support structure that can withstand high pressures and significantly reduces column backpressure.

StarCore C18 Column is a versatile reverse-phase C18 column that utilizes a unique end-capping technology to further reduce the activity of silanol groups without compromising hydrophobicity, resulting in excellent peak shapes for acidic, basic, and metal chelates.

The StarCore C8 Column employs an octyl-bonded phase, offering complementary separation selectivity compared to octadecyl-bonded phases. It also incorporates a unique end-capping technology that effectively reduces the activity of silanol groups on the filler surface, enabling analytes to exhibit well-defined chromatographic peak shapes.

The StarCore C18AQ Column incorporates unique polar groups within its filler, enabling compatibility with 100% aqueous phases and overcoming the issue of "hydrophobic collapse" in bonded phases. It improves the retention of polar compounds while maintaining the retention and separation of non-polar compounds.

The StarCore Amide Column utilizes a polar amide-bonded phase based on hydrophilic interaction chromatography principles. It complements conventional reverse-phase C18 and C8 columns by addressing their poor separation selectivity or non-retention of strongly polar compounds, providing a better option for the separation of these compounds.