Double-sided, compact polypropylene rack is perfect for use on the benchtop or in the freezer. One side accommodates 0.5ml microcentrifuge tubes while the opposite side holds 1.5ml to 2.0ml microcentrifuge tubes. 96 wells on each side keep tubes upright in an 8 x 12 array. Alphanumeric index permits easy tube identification and a matte side panel accepts tape or direct labeling. Molded in handles provide a secure grip for transport. Racks can be used for freezer storage down to -80 degree C (-112 degree F) and can be autoclaved at 121 degree C (250 degree F). Optional cover fits either side, protects samples and is translucent for easy viewing. Research, industrial and healthcare professionals rely on SP Scienceware for their sample handling needs. Sold worldwide, Bel-Art and H-B Instrument brand laboratory supplies include over 5,000 items from safety wash bottles to fume hoods, thermometers, racks, desiccators, hydrometers, ice buckets, scoops and spoons. Custom calibration services, plastic molding, specialty coatings and wire manufacturing are also available. Wilmad-LabGlass brand laboratory glassware complements Bel-Art and H-B Instrument with over 7000 items including NMR and EPR consumables and specialty glassware, as well as custom fabrication for individual glassware, glass repair services and OEM glass parts. SP Scienceware is a division of Warminster, PA based SP Industries which also include SP Scientific laboratory, thermal management, and pharmaceutical production equipment and SP Ableware aids for daily living.