成像仪和扫描仪

如何选择和是的成像仪类型高度依赖于您选择的实验系统和检测系统,以及您实验所要求的数据质量和数量。

Amersham Imager 600系列结合了GE 医疗在Western印迹方面的专业知识和Fujifilm™最先进的电荷耦合器件(CCD)技术以及卓越的光学系统。Amersham Imager 600系列为化学发光、荧光、比色法和密度测量应用带来高性能成像。

Typhoon系列提供高性能多应用激光成像仪,使得高通量地处理磷屏、多色荧光、和化学荧光成为可能,同时保证定量的精确性和高灵敏度。

    主要目的是制备一种最能满足您下游将要使用方法要求的产品。这可能意味着获得最好的纯度、保留分子结构、生物活性,或者是所有感兴趣生物分子的相对含量。这种方法必须去除降解感兴趣生物分子、干扰即时的下游分析、或者是威胁样品的长期保存的污染物。方法的选择经常会在不同的因素比如效率、时间、努力和成本之间进行平衡。

    最初的提取以细胞裂解(化学的或物理的)到一个能够立即确保靶标生物分子最小化降解保护性的环境中开始。然后样品通过降解或去除污染的生物分子进行优化,如果需要的话,进行浓缩。

Much of GE Healthcare's filtration media are available in either flat format or in encapsulated formats, such as syringe filters, capsule filters, and filtration microplates.

  • Flat filters: Circles or sheet format. Circles would normally be used in an appropriate filter holder.
  • Prepleated filters (only for cellulose papers): Prefolded/pleated filter paper circles for use in conical filter funnels.
  • Syringe filters: Small, encapsulated, disposable filter units intended for filtration of small sample volumes using a syringe.
  • Syringeless filters/filter vials: Encapsulated, disposable filter units for small volume sample preparation not requiring the use of a syringe to drive the filtration step.
  • Inline filters: Encapsulated, disposable filter units intended for connection to flexible tubing. Units are available for filtration of liquids and for air/gas applications.
  • Capsule filters: Disposable filter units incorporating pleated filter media for larger volumes of liquid and air/gas applications.
  • Filtration microplates: Microplates with incorporated filter media for simultaneous filtration of multiple samples.

 

Filter characteristics and typical properties

The selection of a laboratory filter depends on the conditions and objectives of your experiment or analytical procedure. The three most important characteristics of any laboratory filter are:

  • Particle retention efficiency
  • Fluid flow rate through the filter
  • Loading capacity

According to your particular application, other important filter characteristics may also require examination, for example wet strength, chemical resistance, purity, and ash level. 

Typical properties of filter papers and glass fiber filters

Membrane materials

Chemical compatibility chart of membranes and housings


Filtration Methods for flat filters

  Gravity Vacuum Pressure
Cellulose Filter Papers Suitable Suitable Not generally used
Glass Microfiber Not suitable Suitable Suitable
Membranes Not suitable Suitable Suitable


Maximum practical volumes of cellulose filter paper circle sizes (quadrant folded)

Volume (ml) 15 20 35 75 135 300
Filter Diameter (mm) 90 110 125 150 185 240

 

特色产品