1.Q:What is the function of suppressor?

   A:Suppressor reduce the background conductance, improve the sensitivity of ions to be measured, and make the "counter ion" in the sample enter the waste liquid.

 Contrast picture of using and not using suppressor

2.Q:How does the membrane suppressor work?

   A:H ⁺ and OH^- through electrolysis of water at the electrode, and under the combined action of electric field and ion exchange membrane,can realizes the directional migration and exchange of ions.

Principle of anion suppressor

3.Q:Why do we choose membrane suppressor

  A:At present, there are two main types of suppressors: the membrane suppressor used by ThermoFisher(Dionex) and Shenghan, and the column suppressor used by Metrohm. The differences between the two are as follows:

   It can be seen that the performance of membrane suppressor is better than that of column suppressor.

4.Q:Which suppressor Shenghan uses?

   A:Self-regenerating electrolytic micro-membrane suppressor

Shenghan Suppressor Parameters

4mm Suppressor

2mm Suppressor

5.Q:Why do we choose Shenghan suppressor?

    A:

• With advanced continuous regenerative membrane electric suppression technology, it doesn't  need add acid or alkali to regenerate;

• High suppression capacity, low background conductance, low noise, stable baseline and maintenance free;

• Anti pollution, high pressure resistance and long life;

• Compatible with 100% organic solvents;

• It can match various types of ion chromatography products;

• The signal line is connected by aeronautical connector, which is convenient for disassembly and assembly.

6. Q:Is Shenghan suppressor only used in Shenghan ion chromatograph?

    A:Of course not. Shenghan suppressor can be used in most of other brands ion chromatograph.

  Suppressor of ThermoFisher(Dionex) and Shenghan are both membrane suppressor.So we just need to add a switch joint between ThermoFisher(Dionex) ion chromatograph and Shenghan suppressor.

   Membrane suppressor adopts electrolysis principle, so when it is connected with the Metrohm ion chromatograph which originally Using Column Suppressor.We needs to connect an external power supply to the membrane suppressor to provide current.