The Tissue-Tek® Uni-Cassette® System offers a secure and efficient solution for specimen identification, from the grossing bench to the permanent paraffin block. Each tissue cassette features a base with an attached lid, designed to maximize fluid exchange during tissue processing. Made from chemical-resistant plastic, these cassettes are compatible with solvents and decalcifying solutions. For optimal performance, they are validated for use with Tissue-Tek® SmartWrite® and Tissue-Tek® AutoWrite® Cassette Printers, though they also work with other cassette printers. The system is compatible with Tissue-Tek AutoSection® and most microtome block clamps.