The working principle of a nitrogen blower is to accelerate evaporation through two methods: enhancing the airflow around it and its temperature. Nitrogen is an inert gas that serves to isolate oxygen and prevent oxidation. The nitrogen blower utilizes the rapid flow of nitrogen to break the gas-liquid equilibrium above the liquid, thereby accelerating the evaporation rate of the liquid; And the temperature is increased by dry heating or water bath heating (the boiling point of the target substance is generally higher than that of the solvent), thus achieving the purpose of concentration.
Advantages of nitrogen blowing instrument: (1) It can process multiple samples at once, and its advantages are more obvious in repeated experiments with multiple factors and levels. (2) The experimental operation is simple and flexible. The concentration process can be adjusted at any time without constraints. (3) Long term maintenance by operators is not required in the experiment, saving manpower. (4) The nitrogen blower is accurate and sensitive during concentration, which can avoid sample loss.
Technical Specifications:
1. Product model: YDCY-12AL;
2. Sample quantity: Concentrate and process 1-12 samples simultaneously;
3. Sample bottle volume: 50 or 150mL;
4. Endpoint detection: Each working channel is equipped with a dedicated optical sensor to automatically and independently detect the endpoint;
5. Endpoint volume: The volume that can be fixed is 1.0mL, 0.5mL, or near dry (~0.1mL, and the solvent can be dried by extending the blowing time appropriately). Different specifications of concentration bottles can be used interchangeably at the same time;
6. Water bath temperature: room temperature -95 ℃ (± 0.5 ℃);
7. Nitrogen blowing time: 0-9999s;
8. Gas pressure: nitrogen blowing working pressure, 0~0.1MPa (pressure interval variation of 0.01MPa);
9. External nitrogen pressure range: 0.2~0.8MPa; External allowable air pressure, 1.0MPa;
10. Gas consumption: Under blowing pressure (0.1MPa), each channel consumes approximately 500mL/min (approximately 17cfm);
11. Constant volume sensitivity: ten levels adjustable, ensuring more accurate concentration and constant volume of solvents of different colors or translucency;
12. Control mode: Users can choose manual or intelligent mode to control the blowing endpoint according to their actual situation;
13. Alarm prompt: The instrument will automatically sound an alarm when the lid is opened, concentration is completed, or when the water bath volume or nitrogen pressure is insufficient;
14. Other: Power supply, 220V/60Hz;
15. Instrument size, 650 × 450 × 308mm;
16. Weight: 20Kg.