正相無鍵合相硅膠柱可用于分離那些無法或不宜在反相條件下分離的樣品，如：高極性化合物，立體異構體化合物，以及對水敏感而不穩定的化合物。由有機溶劑組成的流動相，便于收集流分的揮發蒸干與樣品回收。SunFire正相硅OBD制備柱具有以下特點：
■塔板數高(接近分析柱的柱效)，高分辨，特別適用于性質相似、流出時間極為相近、需要高分辨分離的化合物(如立體異構化合物)的實驗室純化制備。
■高純硅膠基質，避免對堿性目標物的死吸附所導致的樣品損失問題。
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, 100?, 5 μm, 19 mm X 250 mm, 1/pkg | 186004029 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 30 mm X 250 mm, 1/pkg | 186003449 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 30 mm X 150 mm, 1/pkg | 186003448 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 19 mm X 250 mm, 1/pkg | 186003447 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 19 mm X 150 mm, 1/pkg | 186003446 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 19 mm X 50 mm, 1/pkg | 186003445 |
SunFire Silica Prep Column, 100?, 5 μm, 4.6 mm X 150 mm, 1/pkg | 186003453 |
SunFire Silica Prep Column, 100?, 5 μm, 4.6 mm X 250 mm, 1/pkg | 186003454 |
SunFire Silica Prep Guard Cartridge, 100?, 5 μm, 19 mm X 10 mm, 1/pkg | 186003434 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 30 mm X 75 mm, 1/pkg | 186003436 |
SunFire C18 OBD Prep Column, 100?, 10 μm, 10 mm X 50 mm, 1/pkg | 186008208 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 30 mm X 50 mm, 1/pkg | 186003435 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 30 mm X 150 mm, 1/pkg | 186003438 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 30 mm X 100 mm, 1/pkg | 186003437 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 50 mm X 50 mm, 1/pkg | 186003439 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 50 mm X 100 mm, 1/pkg | 186003440 |
SunFire Silica Prep Guard Cartridge, 100?, 10 μm, 10 mm X 10 mm, 1/pkg | 186003441 |
SunFire Silica Prep Guard Cartridge, 100?, 5 μm, 30 mm X 10 mm, 1/pkg | 186006889 |
SunFire Silica Prep Guard Cartridge, 100?, 10 μm, 30 mm X 10 mm, 1/pkg | 186006888 |
SunFire Silica Prep Column, 100?, 10 μm, 4.6 mm X 250 mm, 1/pkg | 186003468 |
SunFire Silica Prep Column, 100?, 10 μm, 4.6 mm X 150 mm, 1/pkg | 186003467 |
SunFire Silica Prep Guard Cartridge, 100?, 5 μm, 10 mm X 10 mm, 1/pkg | 186003429 |
SunFire Silica Prep Guard Cartridge, 100?, 10 μm, 19 mm X 10 mm, 1/pkg | 186003444 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 10 mm X 150 mm, 1/pkg | 186008184 |
SunFire Silica OBD Prep Column, 100?, 10 μm, 10 mm X 250 mm, 1/pkg | 186008185 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 10 mm X 100 mm, 1/pkg | 186008181 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 10 mm X 150 mm, 1/pkg | 186008182 |
SunFire Silica OBD Prep Column, 100?, 5 μm, 10 mm X 250 mm, 1/pkg | 186008183 |
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