Made of polyproplene. The DispoCut Disposable Dissecting Board is strong yet inexpensive enough to throw away. It is especially developed to provide a clean, safer and more efficient way of handling infectious tissue specimens for the pathologist. It can be used on both sides, agreat money saving feature. Printed with helpful imperial and metric dimensional scales in inches, centimeters and millimeters. Available in three sizes to accommodate small biopsies to large gross anatomy procedures. DispoCut is extrusion made using a copolymer resin in order to increase impact and temperature performance. Copolymer resins are also used because they retain the ability to be flexed an unlimited number of times without breaking. Chemically, DispoCut is inert. At regular temperatures most oils, solvents and water have no effect, allowing it to perform under adverse conditions or as a product component exposed to harsh chemicals. Each surface has many conveniently located rulers including seven dimensional circles from 4 to 16 mm in diameter and five larger ones from 2 to 6 cm in diameter. Surface will not dull knifes. Perfect for use with dissecting pins. All sizes of DispoCut Disposable Dissecting Boards are ideal for pathology labs, medical schools, classroom dissections, forensic labs, medical research labs, pharmaceutical labs, surgery and more. Temperature performance range: -27 C to 71 C . Sterilization: DispoCut may be wiped down with alcohol with no effect on the material . Autoclavable, at 121 C for 30 mins. There are some extreme settings which will be damaging and we suggest a trial to determine performance in your equipment.