Biological Significance of Dazol

SHUN-ICHI YOSHIMATSU
1926 Tohoku journal of experimental medicine  
Dazol is a colloidal substance prepared by A. Sato and H. Taka hashi1) (1922), for the purpose of the removal of protein in case of urinary analysis. In the present report the deproteinisation power of Dazol is compared with that of colloidal iron and of other substances generally used for the purpose. For the comparison of deproteinisation power the least amount of each substance necessary to remove protein from a given solution or material, or to obtain such a filtrate as will not become
more » ... d on addition of sulpho salicylic acid is studied. Procedures: 1. Deproteinisation by means of Dazol. 10c.c of 1% albumin solution are measured into a 100c.c volumetric flask and acidified with a few drops of 3% acetic acid. A varying amount of 4 % Dazol is poured into it and made up to mark with water. The contents are shaken vigorously for about 10 minutes and filtered through a folded filter paper. 2. Deproteinisation by means of colloidal iron. 10c.c. of 1% albumin solution are put into a 100c.c. volumetric flask and a varying amount of colloidal iron solution is added to it drop by drop. Then .2c.c. of saturated sodium sulphate solution are poured in and made up to mark with water. The procedure is then the same as in the case of Dazol.
doi:10.1620/tjem.8.1 fatcat:qj72ymy3y5ekvkxi3wr7lwk7ni