These models, which were developed in the initial phase for sample processing, embedding and cutting, fit the CITOTEST metal lid. Made of P.O.M material, 100% resistant to chemical reactions of histological solvents. With two large labeling surfaces on the sides of the cassette and a slanted writing surface on the front with an angle of 45°, adaptable to most cassette labelers. Compact design for secure fit in microtome chuck adapters and to prevent cassette deformation during pathology sectioning. The larger locking slot is designed to accommodate the metal lid.