Fully Automatic Nitrogen Evaporator

Fully automatic nitrogen evaporators are essential for large-scale analytical work, particularly in environmental pollutant and food safety analysis. To obtain trace target components, pre-treatment of samples is required, involving fundamental steps such as sample extraction, concentration, purification, and re-concentration. Rapid, non-destructive concentration is a critical component of this process.

Common devices for concentration include rotary evaporators, K-D concentrators, and nitrogen blowers (abbreviated as nitrogen blowers). Among these, nitrogen blowing offers simplicity as it requires no specialized equipment design, making it convenient when sample quantities are small or solvent volumes are low. However, when concentrating large batches of samples with substantial solvent volumes, these methods become inefficient. The process becomes time-consuming and labor-intensive (requiring constant monitoring to prevent over-drying), and open-system nitrogen blowers pose health risks to operators.

This equipment employs a unique concentration method that significantly increases the concentration rate. Simultaneously, it utilizes an integrated exhaust fan to direct the waste gases from evaporation through an exhaust pipe. This allows the nitrogen evaporator, which traditionally required placement in a fume hood, to be safely installed on a standard laboratory bench. Not only is it easy to move, saving laboratory costs, but it also reduces the exposure of operators to toxic and harmful solvents. It is an essential sample preparation device for laboratories.

• Capable of concentrating single or multiple samples simultaneously without manual supervision: Multiple optical sensors monitor the concentration process of each sample. When evaporation reaches the preset volume, the system automatically halts nitrogen purging for the corresponding channel and triggers an alarm notification, eliminating the need for human oversight throughout the entire concentration process.

• Specialized airflow purging trajectory and buffer design: Accelerates solvent evaporation and concentration while preventing solvent splashing losses.

• Freely configurable, controllable, and real-time display of operating parameters: Key parameters—nitrogen blowing pressure, water bath temperature, and operating time—can be customized as needed.

• Stable and constant nitrogen blowing pressure: The instrument features an automatic pressure regulation system that maintains consistent gas flow pressure regardless of sudden channel (sample) openings, closings, or quantity changes.

• No sample contamination: All gas pathways and related components utilize validated zero-contamination materials, preventing sample contamination from the instrument.

• Simple and safe operation: Flexible parameter settings and convenient sample loading/unloading procedures ensure ease of use. The fully enclosed design, combined with the instrument's powerful exhaust system, prevents exposure of the instrument and operator to water bath vapors and organic volatile components.