Quang-Dong Bui, PhD student under supervision of Prof. Eeltink at the Chemical Engineering and Separation Science research group of VUB, won the 1st Poster Prize at the International Symposium on Chromatography 2026 held in Prague, Czech Republic for his contribution titled “Enabling oligonucleotide impurity profiling and diastereomeric separation via selective phosphorothioate alkylation using ion-pair-free reversed-phase liquid chromatography”.