Methods are described for packing unfrozen split milk samples which hold their temperature within acceptable limits of 32–40°F for 24–30 hours when stored at ordinary room or higher temperature. The samples may be packed in a wrapped vacuum bottle, surrounded by a refreezant, and placed in cork or Styrofoam shippers or may be packed in nested Styrofoam boxes. Plate counts of split samples, shipped in the nested boxes to participating laboratories for examination, agreed well with each other and with the control laboratory.

This content is only available as a PDF.

Author notes

1Presented at the 44th Annual Meeting of the International Association of Milk and Food Sanitarians, Inc., at Louisville, Kentucky, October 7–10, 1957.

Cecil B. Donnelly received his B.S. and M.S. degrees in bacteriology from the University of Kentucky in 1943 and 1952 respectively. During World War II he served in Naval Epidemiology Units in the United States and overseas. Since 1953 he has been with the U. S. Public Health Service at the Robert A. Taft Sanitary Engineering Center in Cincinnati, Ohio, as a bacteriologist in the field of milk sanitation.