Grinding smaller amounts of frozen tissue within a 1.5ml microcentrifuge tube can reduce sample loss and collection time. The Scienceware liquid nitrogen cooled mini mortar and pestle set allows you to pulverize tissue and extract DNA or RNA from tiny tissue samples directly in a microcentrifuge tube. A stainless steel mortar with a welded fixture that cradles the tubes is suspended above a stainless steel cavity. The cavity holds the liquid nitrogen and is nested in a heavily insulated blue polyethylene housing. Tube contents are frozen by the liquid nitrogen that surrounds the mortar. Because liquid nitrogen does not make contact with the tube, it prevents it from cracking. The set includes a 5" long stainless steel pestle with a polyethylene handle that is used to pulverize the tissue within the tube. 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.