Oasis MAX 6 cc Vac Cartridge, 150 mg Sorbent per Cartridge, 30 µm Particle Size, 30/pk [186000369]

The 6 cc Oasis MAX cartridges contain the Oasis MAX, which is a novel, mixed-mode polymeric sorbent that has been optimized to achieve higher selectivity and sensitivity for extracting acidic compounds with anion-exchange groups. Since the Oasis MAX sorbent is water wettable, it maintains its capability for higher retention and excellent recoveries even if the sorbent runs dry, which means there is no need to take extraordinary steps to keep the sorbent beds from drying out during the critical steps prior to sample loading. These syringe-barrel-type cartridges are designed for use with vacuum manifolds and automated SPE instruments.

产品编号 : 186000369

• 对小分子和治疗性肽具有最高的灵敏度
• 降低LC/MS/MS分析的基质效应
• 卓越的选择性
• 非同寻常的产品质量和重现性，最高的SPE回收率
• 吸附剂的宽泛选择性
• 规格形式的多样性

Oasis 2x4方法

 

这种可开发用于酸性、碱性和中性化合物的SPE方案的新策略，将改变SPE方法的操作实践。利用离子交换吸附剂－均为HLB的衍生物的优异性能，Oasis 2x4方法对多数分析物均可在首次试验便能获得高回收率。

 

Oasis 2x4方法SPE吸附剂和方案选择的简单且符合逻辑的途径。两种方案和四种吸附剂的组合，实现对酸性、碱性和中性化合物的提取，在得到高SPE回收率的同时去除干扰分析的基质组分。根据下表列出的简单步骤操作可以得到高回收率和最干净的提取物：

 

• 确定分析物的特性（中性、酸性或者碱性，pKa）
• 从四种Oasis吸附剂中选择一种
• 应用所示方案（1或2）
• 根据液相色谱分析，确定SPE回收率