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Pore size RO membrane ranges from _____________

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Pore size RO membrane ranges from _____________

(a) 0.1- 5µm

(b) 0.1- 0.01µm

(c) 0.001- 0.01µm

(d) 0.0001- 0.001µm

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The question is from Membrane Filter in division Building Blocks of Dairy Processing of Dairy Engineering

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The correct option is (d) 0.0001- 0.001µm

Easy explanation: Reverse Osmosis has a pore size range of 0.0001 – 0.001. It is by far the finest separation material available to industry. It is used on a large scale for the desalination and purification of water as it filters out everything but water molecules, with pore sizes approaching the radius of some atoms in many cases.

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