654 



THE: MOJONNIER TEST 



fifteen seconds longer, then blowing gently to remove last drop. 

 The pipette must be perfectly clean and dry before being used. 

 Wash frequently with sulphuric acid, water, alcohol and ether to 

 insure having a clean pipette. 



(5). Remove flask from holder and run 4 c.c. water (one 

 charge on water burette) into each flask. Be careful not to add 

 more. Shake well until all of sample is mixed with water. This 

 can be done without inserting cork. 



Fief. 112 

 Chianomatic Balance 



Tig. 113 

 Extraction Flask 



Courtesy Mojonnier Bros. Co. 



(6). Before replacing flask into holder, add \y 2 c.c. c.p. am- 

 monia. Shake well so that all of sample is well mixed with am- 

 monia. This can be done without inserting cork. 



(7). Add 95 per cent alcohol up to base of top bulb of extrac- 

 tion flask. Insert cork, using best quality corks only. Replace 

 flask into flask holder. Shake thoroughly and see that no milk ad- 

 heres to any part of flask undissolved. In case particles of milk 

 stick to side of flask, shake thoroughly until these are washed away. 

 It is of the utmost importance to shake thoroughly at this point. 



(8). Add 25 c.c. ethyl ether, insert corks and shake vigorously, 

 lengthwise of flask, with liquid in large bulb of flask, and small bulb 

 extended upward. Stop shaking at end of five seconds until all 

 liquid has run into large bulb and repeat vigorous shaking for four 

 five-second periods. 



