Disposable plastic cassettes hold tissue specimens during processing and embedding, as well as in storage. Molded from a special high-density polymer, these patented cassettes keep specimens safely submerged in liquid and are totally resistant to the chemical action of histological solvents. The efficient flowthrough slots maximize fluid exchange and ensure proper drainage. The one-piece integral lid eliminates the need for separate steel lids. Cassettes can be opened and closed as often as necessary and will always relock securely without danger of specimen loss. Large labeling areas are located on three sides of the cassettes for your convenience.