Heraeus GmbH

H. Mohn, 60 JahreQuart /as-25Jahre Hochvakuumtechnik, W. C. Heraeus GmbH, Hanau, Germany, 1965, p. 114. 

Electric tube furnaces of appropriate dimensions are available from various manufacturers. A model RO 4/25 by Heraeus GmbH, Hanau, FRG is suitable. However, a very satisfactory furnace can be built by any well equipped laboratory workshop at little cost and effort. The material required consists of thin walled ceramic tubing, 3.5 cm i.d., nichrome resistance wire, heat resistant insulation, and ordinary hardware material. A technical drawing will be provided by the submitters upon request. The temperature of the furnace can be adjusted by an electronic temperature controller using a thermocouple sensor. A 1.5 kW-Variac transformer and any high temperature thermometer would do as well for the budget-minded chemist. 

Makers of vacuum ovens include Gallenkamp (from Fisher), Heraeus GmbH Co. KG, Jouan, and Townson and Mercer (see http //www. sanyogallenkamp.com http //www.heraeus.com http //www.jouaninc.com http // www.townson-mercer.co.uk). 

Leyboid-Heraeus GmbH u. Co., in its own publishing house, Cologne 1968,... 

Heraeus GmbH www.heraeus-noblelight.com UV equipment, UV Kght sources (standard and exdmer), ballasts... 

J. Strutz, W.C. Heraeus GmbH, Hanau, personal communication. 

Heraeus GmbH-, P.O. Box 1553, D-6450 Hanau, West Germany, and Unit 9, Wates Way, Brentwood, Essex CM15 9TB. 

W. C. Heraeus GmbH Co. KG, 381 WATB. See bed, weighted average temperature... 

G. Kienel and Ing. G. Deppisch (Leybold Heraeus GmbH, Koln, FRG), Dr. K. Deutscher (Leitz, Wetzlar, FRG), Dr. H. Bach (Schott, Mainz, FRG), Dr. F. Geotti-Bianchini (Stazione Sperimentale del Vetro, Murano-Venezia, Italy), Dr. C. Misiano (Selenia SpA, Roma, Italy), Prof. Dr. R. W. Hoffman (Case Western Reserve University, Cleveland, OH, USA), Prof. Dr. R.Th. Kersten (Technische Universitat, Berlin), Prof. Dr. H. A. Macleod (Optical Sciences Center, University of Arizona, Tucson, AR, USA) and Dr. E. Pelletier (Ecole Nationale Superieure de Physique, Marseille, France). 

The principle of thin-fUm distillation has been developed further by Messrs. Leybold-Heraeus GmbH, Cologne, to a so-called mixed-film distillation procedure . This process takes place at pressures of 1 mm or less on a large evaporating surface, with special precautions to ensure that the film is energetically mixed, so as to renew... 

Company report Kurzweg-Destilla-tion, Leybold-Heraeus GmbH 1984. 

CP-2 The semi-finished products were pre-dried for 2 hr at 105°C in a forced air oven (Thermicon (Heraeus GmbH, Hanan, Germany), compression molded at 180°C for 5 min at 5.8 MPa in a Joos hot press (hydraulic press type HP-SIO, Joos, Pfalzengrafenweiler, Germany) and cold pressed for 3 min at 25°C at 5.8 MPa in a Joos cold press (hydraulic press type HP-S60, Joos, Pfalzengrafenweiler, Germany). 

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