Automatic Nitrogen Evaporator

I. Product Description

In a large amount of analytical work, especially in the fields of environmental pollutants and food-safety analysis, samples must be pre-treated to obtain trace target components. The process mainly includes sample extraction, concentration, purification and re-concentration, among which rapid and lossless concentration is a key step. Common concentration devices include rotary evaporators, K-D concentrators and nitrogen purge (nitrogen concentrator) units; nitrogen purge concentration is the simplest. When a large batch of samples must be concentrated simultaneously and the solvent volume is large, the above devices become inadequate — the process is time-consuming and laborious (requires supervision to prevent drying), and the open nitrogen purge device is harmful to operators' health.

This instrument uses a unique concentration method to greatly increase the concentration rate. Meanwhile, it uses a built-in exhaust fan to discharge the evaporated waste gas through an exhaust pipeline, so that a nitrogen purge concentration device that would otherwise have to be placed in a fume hood can be safely installed on an ordinary laboratory bench. It is easy to move, saves laboratory cost, and reduces the harm of toxic and harmful solvents to operators. It is a laboratory sample pre-treatment device.

II. Product Characteristics

The automatic nitrogen concentrator can concentrate single or multiple samples simultaneously without manual attendance: it uses multiple optical sensors to monitor the concentration process of each sample; when the sample is evaporated to the preset volume, the system automatically stops the nitrogen purging of the corresponding channel and gives an alarm. The whole concentration process needs no manual supervision.

Special airflow purging trajectory and buffering design: accelerates solvent evaporation and concentration and prevents splashing loss of solvent.

Working parameters can be set arbitrarily, controlled and displayed in real time: the main working parameters — nitrogen purge pressure, water bath temperature and working time — can all be set as required.

Stable and constant nitrogen purge airflow pressure: the instrument has a built-in automatic pressure-regulating device; the airflow pressure can be automatically controlled and kept constant, unaffected by the sudden opening, closing or number of working channels (samples).

No sample contamination: all gas paths and related components use validated zero-contamination materials, avoiding contamination of the sample by the instrument.

Simple and safe operation: flexible working-parameter setting and convenient sample loading/removal; easy to learn and use. The fully enclosed design and the instrument's powerful exhaust system avoid the influence of water-bath steam and organic volatiles on the instrument and operators.

III. Technical Parameters