CfA Safety: Disposal Procedures
 Disposal of hazardous chemicals:

  • Be sure that hazardous waste containers are leak-proof and appropriate for use with the chemicals they contain.
  • Make arrangements through the Safety Office (5-7478) for the removal of the waste.
  • Make sure that all containers are properly labeled; hazardous waste labels are available through the Safety Office:
    • Identify all major constituents and hazardous components by chemical name, not by acronym or trade name.
    • Fill in your name, room number and the date.
    • Complete a Hazardous Waste Pickup List (available from the Safety Office), listing the waste chemicals; be sure to identify the exact location of the waste. Return a copy of this list to the Safety Office.

  • Disposal costs are based on container size and not on the net contents of a container; therefore:
    • Fill bottles as full as is practical; be careful, however, to leave space in bottles containing very volatile chemicals.
    • Some chemicals can be combined. However, be sure to check MSDS's to be certain that you are not combining incompatible chemicals. Information about incompatible chemicals is available from the Safety Office.

  • Disposal costs usually far exceed the original purchase price for chemicals -- buy only the quantities you need, and keep in mind shelf life. Information about small quantity suppliers is available from the Safety Office. If you have any questions, call the Safety Office @ 5-7478.

Disposal of needles and syringes:

  • Place entire unit (needle and syringe) into rigid red sharps container. DO NOT bend, shear, resheathe, or remove needles from syringes. When container is full, close it, and call the Safety Office (5-7478) to arrange for disposal. It is illegal to discard sharps waste with the regular trash.

Disposal of biomedical waste:

  1. Liquid waste includes bacterial, yeast, and cell culture spent media.
  2. Solid waste includes plastic pipets, petri dishes, tissue culture flasks, centrifuge tubes and pipet tips that have been in contact with biomedical waste.
  3. Note: The Safety Office is not aware of any biomedical waste being generated at the Center. Be sure to contact the Safety Office (5-7478) if your lab will need to dispose of such waste. The Safety Office will make the necessary special arrangements. It is illegal to discard such waste with the regular trash.

Disposal of radioactive waste:

Call Sid Paula (Harvard Radioisotope Office, 5-2345) for special procedures.


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