PREPARATION OF ANTI-HOG-CHOLERA SERUM 111 



Bottling and labeling. After a lot of serum 

 has passed a satisfactory test it remains to place 

 it in bottles of suitable size for shipping. In 

 large laboratories this is done with machines de- 

 signed especially for the purpose ; in smaller ones 

 it is done by placing the serum in a large covered 

 container drained by a tubular outlet on which is 

 fitted a few inches of rubber tubing. This tubing 

 terminates in a small umbrella-shaped aluminum 

 device, the serum flowing through the part repre- 

 senting the handle, and the bottle being protected 

 from dust during the filling process by the part 

 representing the cover. All bottles intended for 

 shipping are sealed and placed in the refrigerator 

 until they are needed. 



A label should be placed on every bottle of se- 

 rum shipped, and should include : 



1. Eelease tag and license number if the labora- 

 tory is being operated under federal license. 



2. Name and address of manufacturing firm or 

 institution. 



3. Dosage table. 



4. Identification mark, which will enable the 

 manufacturer to trace the exact history of any 

 bottle of serum. 



5. Return date, or latest date on which the se- 

 rum may safely be used. 



6. Brief directions for use and caution regard- 

 ing methods of preservation. 



