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Aspirators in the lab can be used to dispose of chemicals.

A gif displaying how an aspirator works:


  • A water aspirator works by having water forced at a high velocity through a small nozzle. A vacuum is created at the smallest end of the nozzle. A tube is attached to this section and can be used to draw up chemicals for disposal. The chemicals then mix with the high velocity water flow discharge at the end of the nozzle. Both the chemicals and the water will be treated in the LNF Acid Waste Neutralization System.
  • The water needed to run a single water aspirator is approximately 2 gallons per minute.
  • Do NOT aspirate anything over 75C
  • Always check the SDS of a chemical whether it should be aspirated or collected.


The following wet benches have aspirators:


  • Other links that are useful