CHEMICAL TESTS AND ANALYSES 



355 



Gravimetric Determination. 



Dilute a measured portion of a 40 per cent solution with an 

 equal volume of water, use 5 c.c. of the diluted mixture, cor- 

 responding to 1 gram' of the condensed milk and proceed as 

 directed under "Milk." 



Total Solids. 



Dilute a measured portion of a 40 per cent solution with an 

 equal volume of water, measure 5 c.c. of the diluted mixture, 

 corresponding to 1 gram of the condensed milk into an evap- 

 orating dish containing 15 to 20 grams of pure dry sand and 

 proceed as directed under "Milk." 



Ash. 



Ignite the total solids at very low- redness, cool, and weigh. 

 See "Milk." 



Proteids. 

 Determine nitrogen in 5 c.c. of the 40 per cent solution 



