26 



METHODS FOR THE ANALYSIS OF URINE 



TABLE I 



Procedure. Select thirteen large test-tubes of good glass and 

 indistinguishable in color and form. Into each of ten of these 

 introduce 10 c.c. of the various standard solutions. Make up to 

 60 c.c. with distilled water and add to each exactly the same 

 amount of an aqueous solution of sodium alizarine sulphonate 

 (10 to 15 drops). Mix well by inverting. Introduce 10 c.c. of the 

 urine to be tested into a similar test-tube, dilute and add indicator 

 in exactly the same way as before. Match the color of the diluted 



