Labels included within trays /jars can be employed to provide basic object data in a convenient, easy to access manner. Although these labels are created for their collection use and utility value, some of these labels can develop considerable historical value. Considerations in choice of materials include attachment to the container, durability and long-term preservation. Choice of materials can range the gamut of substrate and marking materials.
Colored Dots for Coding Fluid Collections, F. G. Hochberg