PST Instrument Trays are the better sterilization option for your surgical instruments. The stackable trays, integral feet in bases, and corner ridges on lids allow for easier handling in autoclaves and storage. Unique grid system in all bases, trays and lids, makes it easy to install the mat or insert required to protect your instruments properly. Bases have pebble-type surface to keep mats from sticking and ensure proper penetration of sterilizing agents. Use all standard methods of sterilization (autoclave, steam, dry heat, and chemical).