Directional freezing freezes from only one direction.

Directional freezing can freeze water, from only one direction or side of a container, into clear ice.[1][2][3]

Directional freezing in a domestic freezer can be done by putting water in a insulated container so that the water freezes from the top down, and removing before fully frozen, so that the minerals in the water are not frozen.[4]

F Hoffmann La Roche AG, Roche Diagnostics GmbH has a 2017 directional freezing patent for drying solid material.[5]

See also

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Further reading

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References

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  1. ^ "What to Try When Directional Freezing Doesn't Produce Clear Ice". Alcademics. Retrieved 12 October 2022.
  2. ^ "What is Directional Freezing?". Alcademics. Retrieved 12 October 2022.
  3. ^ "Making clear ice at home with tap water and directional freezing". LiquorLabs.tv. Retrieved 12 October 2022.
  4. ^ Whittaker, G. Clay (January 11, 2021). "How to Make Clear Ice at Home for Cocktails". Men's Journal. Retrieved 12 October 2022.
  5. ^ Dittrich, Jürgen; Ziegler, Günter (18 January 2017). "Directional freezing EP2877795B1 European Patent Office". Google Patents. Retrieved 13 October 2022.