The Heidolph Tuttnauer 3850ELV top-loading autoclave (model HEI-023210920) is a 62 L/16.4 gallon electric vertical steam sterilizer with 25 x 40 cm (diameter x depth) chamber, two small wire baskets, a built-in printer, a RS-232 connection, and a 208 V power source for use with standard outlets. The built-in printer documents Good Laboratory Practices (GLP), such as temperature and elapsed time at the end of each cycle, and the RS-232 connection transfers data to PCs. The autoclave has four adjustable programs with temperature selections from 105 to 137 degrees C (221 to 279 F) with sterilization times up to 59 minutes for simplified and reproducible operations. The top-loading autoclave comes with two small wire baskets for maximizing space in the chamber by holding instruments, liquids, laboratory equipment, and other items to be sterilized. A digital display continuously shows temperature, pressure, and running time. Every stage of the cycle is automatic and micro-processor controlled from water-fill, to sterilization, exhaust, and drying. The autoclave has a low water alarm for notifying the user when the reservoir needs to be refilled, an in-line particle filter to protect valves, and standby heating to keep the chamber warm in between cycles. A battery backup ensures retention of settings and controls in the event of a power failure. The stainless steel 316 titanium (Ti) chamber capacity is 62 L/16.4 gallons and dimensions are 38 x 48 cm (15 x 19 inches) (diameter x depth); exterior dimensions are 50 x 65 x 76 cm (19.69 x 25.59 x 29.92 inches) (H x W x D ), and it weighs 85 kg (187 lb). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) Electrical: 208 V, 50-60Hz. Autoclaves are ovens that sterilize laboratory instruments and can kill bacteria, viruses or both. They are often used in laboratories to sterilize lab equipment, media and liquids, and can be designed to meet different health, safety, and environmental standards. Heidolph USA, a subsidiary of Heidolph GmbH (founded in 1938), manufactures laboratory products such as evaporators, pumps, autoclaves, shakers, stirrers, ductless hoods and workstations. The company is headquartered in Chicago, IL.