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Freezing material without electricity.

Biologisk Institutt, University of Bergen, Bergen, Norway.
Journal of Parasitology (Impact Factor: 1.32). 11/2006; 92(5):1103. DOI: 10.1645/GE-890R.1
Source: PubMed

ABSTRACT When collecting in the field, biological samples can be kept cool at 0 C in ice slush, or frozen at -20 C in a crushed ice + salt (NaCl) cold mixture, in well-insulated containers, for several hours or days.

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