Disposal of non-returnable (e.g., lecture-size) cylinders that are not “empty” can be very expensive, especially for reactive gases. Consider residual gas disposal options before purchasing reactive or highly toxic compressed gases. Compressed gas suppliers generally are not licensed to receive hazardous waste, and thus cannot accept non-returnable cylinders. However, suppliers can accept reusable cylinders with residual gas. Make every effort to purchase from suppliers who have a cylinder return program. For disposal, fill out the waste disposal form online for pickup. Even if the cylinder seems empty, it cannot be thrown in the trash. Always treat pressurized cylinders as a waste.

Figure 12.8
Non-returnable lecture gas bottles from a lab cleanout.