Disposal & recovery code
R6Regeneration of acids or bases
R6 is one of the 13 recovery operations (R1–R13) DEFRA recognises: regeneration of acids or bases. It records what happened to the waste at its destination, and is required on every movement filed to the digital waste tracking service.
- Code
- R6
- Operation type
- Recovery (R code)
Sourced from DEFRA’s digital waste tracking reference data, last checked 25 July 2026.
Related
Recording R6 on real paperwork?
WTNcloud checks every code against DEFRA's reference data before a movement is filed, so an invalid code is caught on the form rather than rejected by the service.
Generate a free Waste Transfer Note →EA Compliant · GDPR Compliant · EU Data Storage
Other disposal & recovery codes
- R1Use principally as a fuel or other means to generate energy
- R2Solvent reclamation/regeneration
- R3Recycling/reclamation of organic substances which are not used as solvents (including composting and other biological transformation processes)
- R4Recycling/reclamation of metals and metal compounds
- R5Recycling/reclamation of other inorganic materials
- R7Recovery of components used for pollution abatement
- R8Recovery of components from catalysts
- R9Oil re-refining or other reuses of oil
- R10Land treatment resulting in benefit to agriculture or ecological improvement
- R11Use of wastes obtained from any of the operations numbered R1 to R10
- R12Exchange of wastes for submission to any of the operations numbered R1 to R11
- R13Storage of wastes pending any of the operations numbered R1 to R12 (excluding temporary storage, pending collection, on the site where it is produced)