AST 550 is a fully-automatic cryostat microtome whose specimen forward and backward movement are controlled by motor . So it can get high quality section and easily operated .

• ● It is designed under overall engineering and ergonomic concept. All the components are processed by computer numerical controlled machine.
  ● Retraction function prevents specimen damage from blade .
  ● Total thickness calculation .
  ● The low temperature refrigeration system with environment friendly refrigerant R404.
  ● Adopt UV and O3 sterilize for 30 minutes every time.
  ● Peltier specimen clamp refrigeration may be turned on or off manually.
  ● Two defrosting methods: manual and automatic.
  ● Two running ways : manual and automatic.
  ● Emergency stop function : Press the red button to stop running when any emergency happens.
  ● The high precision unit is enclosed outside the cryostat chamber to prevent it from thermal expansion and contraction , and keep minimum maintenance requirement .
  ● Artificial intelligent interface is easy for user to learn and operate.
  ● LCD screen can display all information including thickness,  thickness sum , controlling time, temperature, timed on/off and so on.
  ● Sleep Function. After activating this function, the temperature in cryostat chamber can be kept between -1℃ and - 10℃; After stopping this function, the temperature in freeze chamber will arrive to working temperature within 30 minutes.
  ● Control panel with locking function could avoid wrong operation.
  ● Handwheel locking function.
  ● Wide freezing shelf load 8 specimen cassettes simultaneously ,and two of them are equipped with peltier to meet different temperature .