1. Typically the vacuum is generated by a water aspirator or a membrane pump.

2. And this suction aspirator is applicable to clearing up cottonseed in oil plants.

3. Never push the aspirator too far into the nostril and always dry thoroughly after each use.

4. To Clean: Rinse aspirator in warm soapy water before first use and after every use.

5. The wastewater samples is transmitted by an air - operated aspirator to the liquid injection valve.

6. The invention relates to an exhaust unit of the vacuum cleaner, which can shield the air outlet of the aspirator, as a result avoids the unclean part exposure and beautifies its appearance.

7. The machine is supply with widia cutter, anti accident system and dust aspirator.

8. Methods Aspiration therapy by using electric resonating negative pressure fat aspirator was applied to 26 patients.