The Leica Ultracut UCT ultramicrotome with a cryo-attachment is designed to meet the precise requirements of sample preparation for electron microscopy. It is ideal for biological applications and soft materials preparation. It features automatic feed in 1nm increments from 1 to 100 nm. The variable cutting speed can be finitely controlled to 0.05 mm per second. All key functions of the microtome, even the motorized approach of knife to specimen, can be operated from the separate control unit.