Request a Free Tissue Cassette Sample Pack See for yourself the durability and readability of Brady's new specimen labeling solution. Included are two labeled and riveted tissue cassettes to run through your fixation and embedding processes, as well as slide labels to show the resistance to the staining process. This offer is open to residents of the United States who are 21 years of age or older and are employed by a laboratory company or distributor. Void where prohibited. Brady Corporation retains the right to refuse product samples to applicants that do not meet the offer criteria. While supplies last.