ASI's bench-top tube racks are made of 100% polypropylene and are available in three popular configurations. No. FR5015 is a 4-way rack that can be used to hold 4 x 50ml, 12 x 15ml or 32 x Microtubes (0.5, 1.5 or 2.0ml). They can be snap-linked together to form as large a rack as is needed. No. AR1070 is a unique rack that holds 30 x 15ml and 20 x 50ml tubes. No. FR1505 is a reversible tube rack for 96 x 1.5ml on one side and 96 x 0.5ml on the other. Suitable for refrigerator and freezer storage as low as -80˚C, these boxes have translucent lids and numbered cavities. No. AR1010 is a PCR workstation rack/box for 96x 0.2ml (plates, strips or individual tubes). No.FS100 is a 10×10 format with an attached hinged lid. No. FS8081 is the standard 9×9 format with a friction fit lid.