In order to obtain trace amounts of target components in a large number of analysis work, especially in the field of environmental pollutants and food safety analysis, the automatic nitrogen concentrator needs to pretreat the samples to be tested. The process mainly includes sample extraction ( Extraction), concentration, purification and re-concentration and other basic steps, in which how to concentrate quickly and without damage is also a very critical part.

Common devices for completing the concentration process include rotary evaporators, KD concentrators and nitrogen purging (referred to as nitrogen purging instruments), etc. Among them, nitrogen purging is simple to concentrate, and it does not require special device design. hours, it is very convenient to use this method.

When a large batch of samples needs to be concentrated at the same time and the amount of solvent is large, the above concentration devices are not enough, the concentration process is time-consuming and laborious (need to be watched to prevent drying), and the open nitrogen blowing device is extremely harmful to the health of the operator. .

By integrating and optimizing the existing technical advantages, the company has successfully developed the JC-D12 multi-sample automatic nitrogen blowing concentrator to solve these problems.

The equipment adopts a special concentration method to greatly increase the concentration rate. At the same time, the equipment uses its own exhaust fan to directionally discharge the evaporated exhaust gas through the exhaust pipe, so that the nitrogen blowing concentration device that must be placed in the fume hood can be safely installed on the general experimental platform. Not only is it easy to move, saving laboratory costs, but also minimizes the harm of toxic and harmful solvents to operators. It is a common sample pretreatment device in the laboratory.

1. Product model: JC-D12

2. Number of samples: Concentrate 1-12 samples at the same time;

3. Sample bottle volume: 50 or 150mL or customized;

4. End point detection: each working channel is equipped with a special optical sensor, which can automatically and independently detect the end point;

5. End-point volume: the volume that can be fixed to the volume is 1.0mL, 0.5mL or nearly dry (~0.1mL, and the solvent can be dried by appropriately prolonging the purging time). Concentration bottles of different specifications can be used interchangeably at the same time;

6. Water bath temperature: room temperature -95°C (±0.5°C);

7. Nitrogen blowing time: 0-9999s;

8. Gas pressure: nitrogen blowing working pressure, 0~0.1MPa (the pressure interval changes to 0.01MPa);

9. External nitrogen pressure range: 0.2~0.8MPa; external allowable maximum atmospheric pressure, 1.0MPa;

10. Gas consumption: under the maximum purge pressure (0.1MPa), each channel is about 500mL/min (about 17cfm);

11. Constant volume sensitivity: adjustable in ten levels, to ensure that the concentration and constant volume of solvents of different colors or light transmittances are more accurate;

12. Control mode: users can choose manual mode or intelligent mode to control the purging end point according to the actual situation;

13. Alarm prompt: The instrument will automatically alarm when the cover is opened, the concentration is completed, and the water volume of the water bath or the nitrogen pressure is insufficient;

14. Others: power supply, 220V/60Hz;

15. Instrument size, 650×450×308mm;

16. Weight: 20Kg.

1. Concentrate single or multiple samples at the same time, without manual duty: The automatic nitrogen concentrator uses multiple optical sensors to monitor the concentration process of each sample. When the evaporation concentration reaches the preset volume, the system automatically stops the nitrogen blowing of the corresponding channel. Scan, and alarm prompt. The whole enrichment process does not need manual supervision;

2. Special airflow purging trajectory and buffer design: it can accelerate solvent evaporation and concentration and prevent solvent splash loss;

3. Arbitrary setting, control and real-time display of working parameters: The main working parameters: nitrogen blowing pressure, water bath temperature and working time can be set as needed.

4. The nitrogen blowing air pressure is stable and constant: the instrument comes with an automatic pressure regulating device, the air pressure can be automatically controlled and kept constant, and is not affected by the sudden opening, closing or 

quantity of the working channel (sample);

5. No contamination of samples: All gas paths and related components are made of proven zero-contamination materials to avoid contamination of samples from instruments;

6. Simple and safe operation: flexible working parameter setting, convenient sample insertion/removal process, easy to learn and use; fully enclosed design and the configuration of the powerful exhaust system that comes with the instrument can effectively avoid water bath steam and organic volatilization groups. impact on instruments and operators.