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. 2020 Jan 22;10:994. doi: 10.1038/s41598-020-57816-y

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The effect of washing on leachates. LC-MS/MS base peak ion chromatograms of Milli-Q water conditioned or not (H₂O) with PDMS devices fabricated from 3D printed molds (pre-polymer:curing agent ratio of 15:1), with (Post-wash) and without (Pre-wash) an overnight wash. Both positive and negative ion base peak chromatograms are shown. Identified peaks correspond to the main ions that differ across the samples.