Why does ice you buy from the store have holes in the middle? Also, why are they more clear than what a home icemaker produces?
In: 435
The ice in commercial ice makers freezes from the inside out so the dissolved oxygen is forced out as it freezes. In a standard ice tray the surface of the water freezes first and consequently traps the dissolved oxygen inside the cube, forming tiny bubbles which give the cube its opaque appearance. Domestic ice machines operate more like an ice tray than a commercial ice machine.
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