Accuratus : centrifugal analysis / Bausch & Lomb Optical Co.

  • Bausch & Lomb
Date:
[1897?]
Catalogue details

Licence: Public Domain Mark

Credit: Accuratus : centrifugal analysis / Bausch & Lomb Optical Co. Source: Wellcome Collection.

    5/36 page 3
    THE URINARY CENTPIFUGE. The Centrifuge is necessary for the accurate examination of the solid and cellular elements of urine for the following reasons : It is possible by centrifugalizing the urine to obtain complete precipitates in three minutes, whereas, by the older method of sedimentation by gravity, 12 to 24 hours were necessary, and even then Some of the lighter elements, i.e., casts, fibres, etc., failed to precipitate. During this period of standing, such chemical changes are certain to take place as to not only make the task of examination much more disagreeable, but also more difficult and in some cases fruitless, owing to the obliteration of much of the evidence which the urine, when fresh, contained. By the centrifugal method, the sub- Stances in the urine, whether they be crystalline, cellular or bacterial, may be examined microscopically and determined chemically without delay and without de- generation from the exact condition as found in the body. The Centrifuge proper consists of a small circular case, containing the train of hard- ened bronze gears. It is attached to the table by screws if to be used in perma-
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