正相无键合相硅胶柱可用于分离那些无法或不宜在反相条件下分离的样品，如：高极性化合物，立体异构体化合物，以及对水敏感而不稳定的化合物。由有机溶剂组成的流动相，便于收集流分的挥发蒸干与样品回收。SunFire正相硅OBD制备柱具有以下特点：
■塔板数高(接近分析柱的柱效)，高分辨，特别适用于性质相似、流出时间极为相近、需要高分辨分离的化合物(如立体异构化合物)的实验室纯化制备。
■高纯硅胶基质，避免对碱性目标物的死吸附所导致的样品损失问题。
INNOVATIVE SILICA-BASED RPLC PREPARATIVE COLUMNS: ENHANCED LOADABILITY AND PEAK SHAPES
Maximizing column load is one of the goals of preparative chromatography. However, tailing peaks limit the resolution and hence the mass loading of a column. Waters SunFire family of HPLC columns was designed to provide symmetric peak shapes and high mass loading. Innovative bonding and end-capping processes were used to synthesize these silica-based reversed-phase packing materials with higher surface coverage and reduced silanol activity. SunFire column chemistry provides higher efficiencies, more symmetric peak shapes, and extremely high mass loading for acids, bases and neutral analytes. Two chemistries (C18 and C8) were developed to meet the requirements of the chemist. Additionally, years of research led to the discovery that the packed bed density of a column is the key to manufacturing stable and efficient preparative columns. Manufactured with the unique patent-pending Optimum Bed Density (OBD™) design, SunFire Prep OBD Columns have the same packed bed density as analytical columns.
SunFire Silica OBD Prep Column, 100Å, 5 µm, 19 mm X 250 mm, 1/pkg | 186004029 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 30 mm X 250 mm, 1/pkg | 186003449 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 30 mm X 150 mm, 1/pkg | 186003448 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 19 mm X 250 mm, 1/pkg | 186003447 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 19 mm X 150 mm, 1/pkg | 186003446 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 19 mm X 50 mm, 1/pkg | 186003445 |
SunFire Silica Prep Column, 100Å, 5 µm, 4.6 mm X 150 mm, 1/pkg | 186003453 |
SunFire Silica Prep Column, 100Å, 5 µm, 4.6 mm X 250 mm, 1/pkg | 186003454 |
SunFire Silica Prep Guard Cartridge, 100Å, 5 µm, 19 mm X 10 mm, 1/pkg | 186003434 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 30 mm X 75 mm, 1/pkg | 186003436 |
SunFire C18 OBD Prep Column, 100Å, 10 µm, 10 mm X 50 mm, 1/pkg | 186008208 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 30 mm X 50 mm, 1/pkg | 186003435 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 30 mm X 150 mm, 1/pkg | 186003438 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 30 mm X 100 mm, 1/pkg | 186003437 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 50 mm X 50 mm, 1/pkg | 186003439 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 50 mm X 100 mm, 1/pkg | 186003440 |
SunFire Silica Prep Guard Cartridge, 100Å, 10 µm, 10 mm X 10 mm, 1/pkg | 186003441 |
SunFire Silica Prep Guard Cartridge, 100Å, 5 µm, 30 mm X 10 mm, 1/pkg | 186006889 |
SunFire Silica Prep Guard Cartridge, 100Å, 10 µm, 30 mm X 10 mm, 1/pkg | 186006888 |
SunFire Silica Prep Column, 100Å, 10 µm, 4.6 mm X 250 mm, 1/pkg | 186003468 |
SunFire Silica Prep Column, 100Å, 10 µm, 4.6 mm X 150 mm, 1/pkg | 186003467 |
SunFire Silica Prep Guard Cartridge, 100Å, 5 µm, 10 mm X 10 mm, 1/pkg | 186003429 |
SunFire Silica Prep Guard Cartridge, 100Å, 10 µm, 19 mm X 10 mm, 1/pkg | 186003444 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 10 mm X 150 mm, 1/pkg | 186008184 |
SunFire Silica OBD Prep Column, 100Å, 10 µm, 10 mm X 250 mm, 1/pkg | 186008185 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 10 mm X 100 mm, 1/pkg | 186008181 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 10 mm X 150 mm, 1/pkg | 186008182 |
SunFire Silica OBD Prep Column, 100Å, 5 µm, 10 mm X 250 mm, 1/pkg | 186008183 |
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