Containers with less than 3% of their contents that are not contaminated with infectious material or do not contain a p-listed material, such as stock bottles, laboratory glassware, and plasticware must be triple rinsed prior to disposal.
- Laboratory glassware or plasticware contaminated with biological material must be disposed of as regulated medical waste (RMW)
- P-listed material, even when empty, must be disposed of as hazardous waste
- Sample vials with small amounts of chemicals must be collected as hazardous waste if it is unable to be rinsed
The Triple Rinse Process
After removing as much product as possible, your empty chemical container can be rinsed and disposed of or reused to store another waste product by following these steps:
- Using a small amount of solvent capable of removing the contaminant (water, acetone,
etc.) rinse out the inside of the container.
- Be sure to use small quantities of solvent to reduce the amount of waste that will be produced
- Rinse must be collected as hazardous waste of the original waste content and you may combine compatible wastes into one waste container. For example: If an empty sulfuric acid bottle is being disposed of, consider the waste "sulfuric acid". This may be added to another waste container as long as the waste is compatible.
- Repeat this step two more times for a total of 3 rinses.
- When the container is empty and ready to be discarded, deface the container’s label as depicted below and clearly write "Empty" and/or “Triple Rinsed".
Labels must be defaced prior to disposal
Reuse of Empty or Triple Rinsed Containers
Empty or triple rinsed containers may be reused for the collection of hazardous wastes, if:
Empty P-listed Material
For all empty containers that previously held a p-listed material, do not triple rinse!
These containers must be disposed of as hazardous waste, even if they’re empty.
Contact email@example.com for any questions regarding p-listed container disposal
Common P-Listed Waste
|Chemical Name||CAS Number|
|Cyanide salts (inorganic)||Varies|
|Copper cyanide (Cu(CN))||544-92-3|
|Nicotine, & salts||54-11-5|
|Nitrous and Nitric oxide||10102-44-0,
|Potassium cyanide (KCN)||
For the complete list of p-listed chemicals, visit the U.S. Environmental Protection Agency's website
Recycling and Disposal of Empty Containers
Triple rinsed plastics other than #1 and #2 written in the universal recycling symbol (♻) must be disposed of in the trash.
Town of Brookhaven does not recycle plastics other than #1 or #2.
Triple rinsed glass containers must be disposed of in the trash if they’re not being reused. Glass containers that have been triple rinsed may be placed in garbage bags, corrugated cardboard boxes or "broken glass" boxes before being disposed of.
Town of Brookhaven does not recycle glass and glassware in recycling containers will not be accepted.
Under no circumstances are containers labeled with the international radioactive symbol, biohazard symbol, or with the words "Hazardous Waste" allowed to be disposed of in the trash.