This transparent polyethylene re-usable mould with 12 numbered cavities provides smooth, flat, polished blocks. The transparent nature of the mould facilitates specimen orientation when transmitted light is used. Particularly useful for embedding media such as JB-4® and methacrylates, which do not polymerise well in conventional moulds. May also be used with LR White provided it is covered. Supplied in a plastic box with hinged lid.