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The presence of Multiple Stellar Populations (MSPs) in Galactic GlobularClusters (GCs) is a poorly understood phenomenon. By probing different spectralranges that are affected by different absorption lines using the multi-bandphotometric survey S-PLUS, we study four GCs -- NGC 104, NGC 288, NGC 3201 andNGC 7089 -- that span a wide range in metallicities. With the combination ofbroad and narrow-band photometry in 12 different filters from 3485A (u) to9114A (z), we identified MSPs along the rectified red-giant branch incolour-magnitude diagrams (CMDs) and separated them using a K-means clusteringalgorithm. Additionally, we take advantage of the large Field of View of theS-PLUS detector to investigate radial trends in our sample. We report on sixcolour combinations that can be used to successfully identify two stellarpopulations in all studied clusters and show that they can be characterized asNa-rich and Na-poor. For both NGC 288 and NGC 7089, their radial profiles showa clear concentration of 2P. This directly supports the formation theories thatpropose an enrichment of the intra-cluster medium and subsequent star formationin the more dense central regions. However, in the case of NGC 3201, the trendis reversed. The 1P is more centrally concentrated, in direct contradictionwith previous literature studies. NGC 104 shows a well-mixed population. Wealso constructed radial profiles up to 1 half-light radius of the clusters withHST data to highlight that radial differences are lost in the inner regions ofthe GCs and that wide-field studies are essential when studying this.

S-PLUS: Exploring wide field properties of multiple populations in galactic globular clusters at different metallicities