There are practical considerations. Ideally one would put each chemical with only the same material in the correct sized secondary containment bin. The correct size secondary containment bin is whichever it the larger volume between A.) 100% of the volume of the largest container inside, or B.) 10% for the total volume contained.
Scientific Plastics makes Spill Trays — Secondary Containment for inside cabinets and on shelves.
Click here for a company that makes bins.
Spill trays can be purchased through Scientific Suppliers via the PantherExpress System, just ask your vendor of Choice for a quotation.
Rubbermaid Plastic Trays are available from the DSS Stockroom.
Stock number 4197T811 MCMASTER-CARR Rubbermaid PLASTIC PAN, POLY-PROP RECT. These items are also known as bins, trays and pans.
Related information from an external source:
Click here for CP Lab Safety’s information page about secondary containers
Department of Environmental Health and Safety recommendations for using ECO Funnel systems:
1) Ensure that the chemical waste being added is compatible with the Nalgene container
2) Fully close the safety funnel when not actively adding waste to the container
3) Label the Nalgene container itself (not the secondary containment) appropriately with a completed chemical waste label
4) Do not store this setup in a sink