BAIRD ScTATLOCK (LONDON) LTD. 



775 776 777 



775 Urine Sediment Glasses, with conical bottoms, size 6 by ij in. inside, each 8d. ; per doz. 



776 Urine Glasses, clear glass, for collecting urine for analysis, capacity \ ; litre .. ,, 



A776 Urine Glasses, , ,, i 



777 r Dr. Ultzrnann's Uro-Saccharimeter, for the clinical examination of urine. New model 



with restricted range of scale. The instrument is available for use with daylight as well 

 as artificial light. It has a graduated sector with open scale, vernier and magnifier, and 

 gives the amount of sugar present in the urine direct in percentages within the limits of 

 o 10%. With one observation tube, in mahogany case . . . . . . each 



778 T Stand for same 



779 T Extra Observation tube for same 





 

 



4 5 

 10 

 6 



9 



780 781 , 



780 Einhorn's Saccharometer, on glass sole, with marked tube for mixing 



781 Esbach's Albumenometers 



782 Esbach's Albumenometers, with indiarubber cork, case, and stand, 



782 



cadi 020 



,,010 



each, 1/4; doz. 15 



DIRECTIONS FOR NOS. 781-782. 



Pour urine into the tube up to the mark (u), add the reagent up to (R), now close the tube by the thumb. 

 and mix by reversing it to and fro several times, but avoid snaking. Allow the tube to stand upright for j.(. 

 hours, then read off on the scale the height of the coagulum. The figures indicate the parts per 1,000 of dried 

 albumen in the urine, and give by dividing by ten the percentage. Thus, if 4 is the point of coagulum, then 

 it contains 4 parts per 1,000 parts, or 0.4 per cent. When the albumen is very abundant, it may be diluted 

 with an equal quantity of water, and the result multiplied by two. If the urine is alkaline, acidify with acetic acid. 



Urine with less than 0.5 per 1,000 cannot be accurately estimated by this method. 



REAGENT. This is a solution of picric acid, containing 10 grammes to the litre, with 20 grammes of citric acid. 



CROSS STREET HATTOTST GARDEN, E-C 



160 



