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Pore size Ultra-filtration membrane ranges from ________

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Pore size Ultra-filtration 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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This question is from Membrane Filter in section Building Blocks of Dairy Processing of Dairy Engineering

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Correct choice is (b) 0.1- 0.01µm

The best I can explain: Ultra filtration has a pore size range of 0.1um to 0.01um. UF membranes reject particles such as silica, viruses, endotoxins, proteins, plastics and smog/fumes such as ZnO. Due to the decrease in pore size, the osmotic pressure required is higher than that of MF.

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