"Samples for bacteriological analysis shall be analyzed by an 

 approved method set forth in the latest edition of the APHA manual en- 

 titled "Standard Methods of the Examination of Water & Sewage". Those 

 methods shall be employed which give the most specific reliable means 

 of measuring organisms having their origin in the intestines of man 

 and other vsnn-blooded animals." 



Sanitation in California tuna canneries must conform to practices 

 laid down in "Regulations Groverning Minimum Sanitary Requirements for 

 Food Packing Establishments (California Government Code Section 11421)." 

 These requirements pertain to such practices and equipment as drainage 

 and plumbing, ventiliation, construction of floors, walls, and ceilings, 

 etc. One provision specific to tvina canneries is that precooked fish 

 must be cooled in a rodent proof room, a practice not generally follow- 

 ed in other states. In most plants in California a space in a larger 

 room is fenced off with wire meshing for coolirjg of the racks of tuna 

 from the precooker. 



Rigid standards are laid down for the construction and operation of 

 retorts used for canning of tuna. Following is quoted from Sections 

 21705 and 21706 of the California Public Health Department's Regulations 

 for the Equipni^pit and Operation of Retorts for the Sterilization of 

 Low Acid Foods in Steam or Water: 



"21705. REQUIRED EQUIPMMT FOR ALL TYPES OF RETORTS 

 WHEN STERILIZING FOOD IN TIN OR IN GLASS JARS WITH 

 gOSURES SUCH THAT THET mX BE PROCESSED IN STEAM 



"(a) Recording Thermometer. 



(1) The temperature chart shall be easily readable to 1°F. 

 and shall be graduated in not to exceed 2°F. divisions within 

 the range of plus and minus 10°F. of the official process to 



be used. All charts shall have a working scale of not less than 

 three inches. Written permission from the State Department of 

 Public Health shall be obtained for the use of old equipment 

 with charts having a working scale of less than three inches. 

 All repla can aits or new installations shall conform to a minimum 

 three- inch working scale, 



(2) No tanperature chart shall be used in a recording thermome- 

 ter unless it is a chart manufactured by or for the manufacturer 

 of the recording thermometer used on the retort. 



333 



