Disinfection and disinfectants / by M. Christian ... tr. from the German by Charles Salter ; with eighteen illustrations.

  • Christian, Max.
Date:
1913
Catalogue details

Licence: In copyright

Credit: Disinfection and disinfectants / by M. Christian ... tr. from the German by Charles Salter ; with eighteen illustrations. Source: Wellcome Collection.

    108/144 (page 100)
    (c) Ruhner Apparatv.H. The Eubner apparatus (F. & M. Lauten Schläger, Berlin) consists of a disinfection chamber, recipro- cating air pump, formalin generator and formalin trap; and in cases where there is no available Con- nection with a steam main, it is also fitted with a steam boiler (Fig. 17). The apparatus is universal in its action, being capable of operating with steam under pressure and in vacuo, with or without com- bination with Chemical disinfectants. The steam generator serves a variety of purposes : (1) For ordin- aiy steam disinfection with or without pressure; (2) for heating the radiators supplying heat to the dis- infection chamber before and after the Operation; (3) for working the air pump ; (4) for heating the formalin liquid by means of a coil. The disinfection is carried on in the following manner: After the chamber has been charged with the material under treatment and has been moderately pre-heated, all the vessels constituting the apparatus being hermetically closed, a vacuum of 600 mm. is produced throughout the apparatus by means of the air pump, and the formalin liquid is heated to boiling by the steam coil, the boiling-point under the prevailing pressure being 140° F. The vaporu’s enter the disinfection chamber from above, and, as in the ordinary steam disinfection apparatus, expel the air by degrees from above down- wards, so that this air escapes at the lowest point of the chamber, traverses the formalin trap and air pump, and is discharged through the boiler fire into the at- mosphere. When the chamber is filled with formalin vapour, which is the case when the thermometer in