Dry bath nitrogen blower and water bath nitrogen blower are two common nitrogen blowers, and the difference between them lies in the difference of heating module, temperature range and application range. Specifically, we (Shanghai Bilang Instrument) make a detailed analysis from the following points:

(1) heating module

Dry bath nitrogen blower is heated by metal module, usually aluminum module.

Water bath nitrogen blower is heated by water bath pot.

(2) heating temperature range

The heating temperature range of dry bath nitrogen blower is from room temperature to 150 degrees.

The heating temperature range of water bath nitrogen blower is from room temperature to 100℃.

(3) Scope of application

For a few samples that are afraid of water, dry heat can only be used instead of water bath nitrogen blower.

(4) heating characteristics

Compared with dry heat, water bath heating is milder and more uniform.

(5) cooling the sample

When special samples cannot be heated but need to be cooled, the water bath tank in water bath mode can be used as an ice bath.

Nitrogen purging is used for sample preparation in gas phase, liquid phase and mass spectrometry. It uses internationally recognized technology to concentrate the sample by blowing nitrogen into the heated surface of the sample. This method has the characteristics of time saving, convenient operation and easy control, and can get the expected results quickly. In this technology, solid phase extraction pretreatment technology is used instead of traditional liquid phase extraction and chromatography technology, so that the samples can be separated and purified quickly. Nitrogen purging is used to replace the common rotary evaporator for concentration, which greatly shortens the analysis time.