STARLET CRYOSTAT With Refrigeration System Up To � 30 Deg And Specimen Quick Freezer Bar Upto -40� C Specimen Freezer Temp. And Chamber Temp. Displays. Automatic � Fully Programmable Defrost System As Well As Manual. Stainless Steel Chamber With Integral Shelves Magnacut Knifes Holder For Long Life Disposable Blades With Anti-Roll Assembly And Knife Guards Sections Thickness Range From 2 � 12 Microns Hand Wheel Locking System For Safe Operation