MILK TESTING 



23 



The acid as well as the washings and contents of the 

 test bottles can be handled only in glass or earthen- 

 ware. 



The acid should never come in contact with tin 

 or a metallic dish of 

 any kind. If acid is 

 spilled on the floor or 

 desks, wash it up imme- 

 diately, using plenty 

 of water. If a large 

 quantity is spilled, ab- 

 sorb it with sawdust, 

 bran, or fine clay. In 

 case any is spilled on 

 the clothing, rinse with 

 water and then apply 

 ammonia to the spots. 

 Never throw the acid 

 waste near a tree or 

 where a person or ani- 

 mal is obliged to walk. 



A convenient form 

 of apparatus for meas- 

 uring the acid where a 

 large number of tests 

 are to be made is shown 

 in Fig. 9. a is the 

 acid bottle connected 

 witli glass tube hb to a pipette. The stopcock/ can 

 be turned so as to allow the acid to run into the test 



Fig. 9. — Acid measuriug apparatus. 



