| http://www.w3.org/ns/prov#value | - In certain embodiments, the polymer membrane includes pores having a median pore size of 300 nm or less, such as in cases where the polymer membrane includes pores having a median pore size of 250 nm or less, of 200 nm or less, of 150 nm or less, of 100 nm or less, of 75 nm or less, of 50 nm or less, of 40 nm or less, of 30 nm or less, of 20 nm or less, of 10 nm or less, of 5 nm or less, of 4 nm o
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