R6: Regeneration of acids or bases
Annex II of the consolidated Waste Framework Directive (2008/98/EC) opens in a new tab.
Applying this code
D and R codes describe the operation, not the waste itself and not site acceptance.
Classify the waste first using the Waste classification technical guidance (WM3) — GOV.UK opens in a new tab, then check permit conditions before applying a code operationally.