Precautions and maintenance of nitrogen blower
(1) The heating medium can use distilled water, deionized water and water bath heating special oil. It is best to use distilled water and deionized water to prevent dirt on the water bath wall.
(2) It is recommended to change the water in the water bath once a day, no longer than one week.
(3) Wash the needle after each use to minimize needle contamination. Organic solvent washing, autoclave and Soxhlet extraction techniques can be used.
(4) The bottom of the bath is ash resistant but not waterproof. Never immerse the water bath in any liquid or place it where it may occur.
(5) Register the use record after use.
1. Choose a suitable heating medium
The heating medium is best to use distilled water and deionized water, which will effectively prevent scale on the water bath wall. Be careful not to use organic solvents as heating media,
The volatilization of organic solutes is toxic and can be harmful to human health.
2. Use algaecide to purify the water bath
After the test is completed, the algaecide is added to the water of the water bath when it is not heated to prevent the organisms in the water bath from being polluted. When choosing an algaecide,
It should be ensured that the algaecide used does not affect the nature of the sample to be processed, and acid algaecide should not be used.
3. Regular water changes
Impurities from long-term experiments, as well as pollutants in the air will pollute the water quality, not only will produce scale, but also may affect the accuracy and rate of the experiment.
Therefore, it is recommended to change the water in the water bath once a week, and the longest should not exceed one month.
4. Acid environment protection
When exposed to or exposed to acidic materials, steam, or samples, they should be washed immediately, neutralized with a moderate sodium bicarbonate solution or other similar solutions, and then rinsed with clean water.
Prolonged exposure to acidic substances will damage the instrument. If you must be exposed to acidic substances for a long time, protective measures should be taken.
Five, clean the needle
After each use of the needle, the needle should be washed with organic solvents and cleaned with high-pressure disinfection to minimize needle contamination and the impact on later experiments.
6. Prohibition of long-term immersion
The bottom of the nitrogen blower is water resistant but not waterproof. After the test is completed, the nitrogen blower should be taken out and wiped clean in time, and the water bath must never be immersed in any liquid.
Or place it where soaking may occur.
Nitrogen blowing instrument adopts internationally recognized technology, using purge and trap technology, at the same time can be temperature-controlled heating of the sample, through nitrogen and other inert gases quickly, controllable and continuous
Sample surface to achieve rapid anaerobic concentration of the sample solution. This method is time-saving, convenient and accurate. Widely used in food safety, medicine, pesticide residue detection, clinical pharmacy
And other fields.
Application area of ​​nitrogen blower:
1. Pesticide analysis: vegetables, fruits, grains, plant tissues, etc.
2. Pharmaceutical drug testing: Chinese medicine pharmacy and drug testing
3. Environmental analysis: drinking water, groundwater, contaminated water, etc.
4. Biological analysis: serum, plasma, blood, urine
5. Commodity inspection: inspection of dioxin, croft, etc.
6. Food and beverage: milk, wine, liquid beverage
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