The Micro-Tec PrepTile 30 consists of a highly polished black granite preparation tile which provides a clean, smooth, level and scratch resistant preparation surface. Suitable for wide range of microscopy sample preparation applications. The hardness of the granite is 7 on the Mohs scale. Can also be used for grinding and polishing to provide a flat support surface for grinding paper or polishing cloths; superior alternative to glass plates. To protect the lab bench and to prevent sliding, the back of the Micro-Tec PrepTile 30 is covered with a sheet of rubber. The level surface is also a suitable reference plane for measurements and assembly applications. Size of this Micro-Tec PrepTile is 30x30cm with a thickness of 1.2cm.