The automatic nitrogen blowing instrument integrates and optimizes the advantages of existing technologies, and the multi-sample automatic nitrogen blowing instrument solves these problems well. The equipment adopts D special concentration method to greatly improve 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 minimizing the harm of toxic and harmful solvents to operators. It is a laboratory sample pretreatment device.
The automatic nitrogen blower can be cleaned and maintained in the following ways:
1. Algaecide: When not heated, add algaecide to the water in the water bath to prevent biological pollution. Acidic algaecides should not be used and should be ensured that they do not affect the samples being processed.
2. Heating medium: Use distilled water and deionized water, which will prevent scale on the walls of the water bath. Be careful not to use organic solvents as heating medium.
3. Change the water: It is recommended to change the water in the water bath once a week, not more than a month.
4. Needle: The needle should be cleaned after each use to minimize the contamination of the needle. Techniques such as organic solvent rinsing, autoclaving, and Soxhlet extraction can be used.
5. Acidic environment: After contacting or exposing to acidic materials, steam or samples, it should be cleaned 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 prolonged contact with acidic substances is necessary, protective measures should be taken.
6. Immersion: The bottom of the bath is water resistant but not waterproof. The water bath should never be immersed in any liquid or placed where immersion could occur.
In a large number of analytical work, especially in the field of environmental pollutants and food safety analysis, in order to obtain trace amounts of target components, it is necessary to pre-process the samples to be tested. The process mainly includes sample extraction (extraction), concentration, Basic steps such as purification and re-concentration, among which how to concentrate quickly and without damage is also a very critical part.
Post time: Aug-04-2022