Index: sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateTreatmentSettings.qml
===================================================================
diff -u -rd01d12afc4afacb7139315e91825ebbd5b6af748 -r121abe6b9a78f12d3c0cce76ca3eb618084409b3
--- sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateTreatmentSettings.qml	(.../PreTreatmentCreateTreatmentSettings.qml)	(revision d01d12afc4afacb7139315e91825ebbd5b6af748)
+++ sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateTreatmentSettings.qml	(.../PreTreatmentCreateTreatmentSettings.qml)	(revision 121abe6b9a78f12d3c0cce76ca3eb618084409b3)
@@ -330,6 +330,7 @@
                 isActive            : vTreatmentCreate.acidConcentrateSet
                 enabled             : _root.editingEnabled
                 currentIndex        : vTreatmentCreate.acidConcentrate
+                centerHorizontally  : true
                 model               : vTreatmentRanges.acidConcentrateOptions
                 onClear             : {
                     vTreatmentRanges.doClearAcidConcentrate(vTreatmentCreate.acidConcentrateSet)