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Journal of Dairy Science Vol. 21 No. 9 575-583
© 1938 by American Dairy Science Association ®
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>Thermal Shock Resistance of Milk Bottles

C. T. Roland and H. A. Trebler

Sealtest, Inc., Research Laboratories, Baltimore, Maryland

ABSTRACT

  1. The use of thermal shock tests is discussed and a suitable test for milk bottles is described.
  2. The percentage of bottles cracked (up to 50%) as a function of the thermal differential was determined on two lots of bottles.
  3. Repeated thermal shocking of bottles at a given temperature differential in laboratory tests, and repeated washings of bottles from the same lot in a commercial washer, both resulted in continual cracking with successive shocks.
  4. Washings during which the machine stopped, resulted in more thermal shock cracking than washings during which the machine ran continuously.






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Copyright © 1938 by the American Dairy Science Association ®.