Argos Technologies R3118 81-Place Polypropylene Blue Storage Plastic Freezer Boxes (Pack of 5) Tight fitting lid ensures samples will not fall out; even when held upside down Boxes withstand temperatures from -80C to 121C and will not degrade like cardboard boxes Holds 0.5, 1.5, and 2.0mL microtubes as well as most brands of vials Dual alphanumeric grid (inside and outside) for sample identification Fits most standard 2" stainless steel freezer racks