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. 2020 Nov 25;8:608718. doi: 10.3389/fpubh.2020.608718

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Copyright © 2020 Jensen, Harboe, Brostrøm, Jensen and Fonseca.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Particle size distributions measured with the NanoScan and OPS in NF (A) and ELPI and OPS in the FF (B). Start and end of activities are indicated with dashed and full lines, respectively.