c^r^ 



BAIRD &. TATLOCK (LONDON) LTD.' 



784 



83 Apparatus for the quantitative estimation of sugar and phosphates in urine, designed bv Dr. 

 r. J. Allen. 



Price, complete, as figured .... 0130 



84 Glass Osmometer Tubes, Dr. Lazarus Barlow's pattern 



each 1 



85 s Dr. Aufrecht's Albuminimeter, to ascertain the quantity of albumen in urine, blood, 



and other liquids (tests take 2 to 3 minutes) . . . . . . each 036 



DIRECTIONS FOR USE. 



Fill the AlbuniMiimeler with the acid urine up to letter (u) on the scale and add the reagent u]> to letter 

 flose the tube with the indiarubber plug and mix the two liquids by turning the tube gently upside down 

 1 limes : place the latter in a centrifuge for 2 minutes. 



ic precipitate of albumen visible on the graduated scale indicates exactly the percentage of albumen 

 When ascertaining albumen in serous liquids, 4 ccm. of the liquid should be poured into the tube 

 inxed with .5 ccm of the reagent, the tube should then be shaken and centrifuged. 

 Any centrifuging machine may be used with our Albuminimeter. 



\\ hen using a machine with about 2000 to 2500 turns per minute centrifuge for ? minutes, with 5000 turns 

 ninutes, and with 5000 turns 2 minutes. 



\\ hen testing with pure solution of albumen it should he borne in mind that egg albumen or blood albumen 

 tain only 85 90% of Albumen and that the graduation in the albuminimetcr is arranged for physiological 

 retions which possess higher viscosity. 



(CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



161 



