For many reasons, the Quick, Easy, Cheap, Effective, Rugged, and
Safe (QuEChERS) approach to sample preparation has become the method of choice
for pesticide residue analysis. The increased speed in sample preparation has
been welcomed by many laboratories that analyze thousands of food samples a
year. Using a variation of the QuEChERS method, it was possible for two U.S. Environmental
Protection Agency (EPA) chemists to analyze 4000 fruit samples for the N-methyl carbamate formetanate HCl (FHCl)
over a period of less than 2.5 years. This rate of sample analysis would not
have been possible without the QuEChERS approach to sample preparation. In the
quest for even shorter sample preparation times and greater sample throughput,
a technology was introduced that uses tips instead of tubes for sample cleanup.
If MgSO4, primary-secondary amine (PSA) sorbent,
and graphitized carbon black (GCB) sorbent in a 15 mL tube provide a sufficient
sample cleanup for many matrixes and many pesticide analytes, then MgSO4, PSA sorbent, and GCB sorbent in a
dispersive pipet extraction (DPX) tip should also provide a sufficient cleanup.
This technique appeared to have the potential to further streamline sample
preparation as well as further reduce solvent use. The EPA Analytical Chemistry
Branch analyzed 600 additional orange samples collected by the U.S. Department of
Agriculture (USDA) Pesticide Data Program (PDP) in an ongoing dietary exposure
study of FHCl. The analyses of the 600 samples needed to be completed in the 2
month timeframe by only one chemist. The method used to analyze the 4000
previous samples in the FHCl study was a version .....
2021-09-20
简要介绍 dSPE 在全自动移液工作站上应用实现全自动抗体纯化的原理。
比较了三种 Protein A 纯化 HIgG 的效率及纯化流程优化方法。
使用 IMCSTips 实验全自动纯化(一步)方法及数据分析
2021-09-20
1. IMCStips 应用原理展示
2. His-tagged 蛋白纯化流程优化及数据分析
2021-09-20
IMCStips 亲和层析柱
● 一次层析即可快速产生高纯重组蛋白
● 一致性好、回收率高,个样品的差异不到 10%
● 可结合各种复杂方法的模板化工作流
● 与 Hamilton 移液工作站结合,可在 30 分钟内处理 96 个样品
● 可定制的工作流程
2020-02-08
BenchWaver™ 把传统的平台摇摆运动与轨道振动器的圆周运动结合起来,这种最优组合能够产生最适合分子生物学应用的三维运动。
2020-02-08
强力混匀,适于细胞裂解、研磨或均质
与通用的组织研磨机更快速、更高效
采用密封2.0mL管,消除交叉感染
中通量,可同时处理3~6个样品
无锡微色谱生物科技有限公司
WuXi MicroSep Biological Science Co,. Ltd.
地 址:江苏省江阴市月城镇北环路 19 号
电 话:17715681752
工作时间:周一 ~ 周五 9:00 ~ 16:00