. 2019 Aug 9;24(16):2889. doi: 10.3390/molecules24162889
© 2019 by the authors.
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/).
Figure 2.
On-line capillary tube connected to HPLC [39].