The Micro-Tec PrepTile 15 consists of a highly polished black granite preparation tile which provides a clean, smooth, level and hard preparation surface. The hardness of the granite is 7 on the Mohs scale. Suitable for wide range of microscopy sample preparation applications. Superior alternative to a glass plate. To protect the lab bench and to provide sliding, the back of the Micro-Tec PrepTile is covered with a sheet of rubber. The level top surface is also a suitable reference plane for measurements and assembly applications. Size of the Micro-Tec PrepTile 15 is 15x15cm with a thickness of 1.2cm.