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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Effect of ultrafiltration time in the (a) MTX mass (µg), and (b) percentage of feed volume transferred to the ultrafiltrate compartment when blank NLCs (26 mg mL−1) spiked with 13.9 µg mL−1 MTX were submitted to ultrafiltration (2095× g).