Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . Fig. 128.—Hemometer ofSahli. (Greene.) THE BLOOD. 423 accurately, as determined by the tintometer, to the specific color curve ofprogressive dilutions of normal blood. Two sets of standards are furnished,one for use in daylight, the other by candlelight, the latter being set of 12 disks is mounted on plaster of Paris and enclosed in two. Fig. 129.—Hemoglobinometer of Oliver. (Coplin.) wooden frames, six disks in each frame. They represent the color of solu-tions of hemo
Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . Fig. 128.—Hemometer ofSahli. (Greene.) THE BLOOD. 423 accurately, as determined by the tintometer, to the specific color curve ofprogressive dilutions of normal blood. Two sets of standards are furnished,one for use in daylight, the other by candlelight, the latter being set of 12 disks is mounted on plaster of Paris and enclosed in two. Fig. 129.—Hemoglobinometer of Oliver. (Coplin.) wooden frames, six disks in each frame. They represent the color of solu-tions of hemoglobin with percentages from 10 to 120. To obtain interme-diate values, colored riders are used, each representing and 5 per cent,of hemoglobin, when used with the disks from 70 to 120, but twice these valuesif used with the disks from 10 to 60. 424 DIAGNOSTIC METHODS. The blood is taken in a capillary pipet similar to that of von Fleischl,holding 5 cmm. of blood. The diluting chamber has a white backgroundof plaster of Paris and, when filled with distilled water in which one pipetfulof blood has been dissolved, yields a solution of i per cent. When filled thecell is covered with a blue glass cover. Method. The pipet is filled with blood drawn by capillarity from a puncture ofthe ear or finger. Wash the blood from the pipet into the diluting chamberby means of water from a medicine dropper, fill the chamber with water, stir wellwith the handle of
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