A control system is in place to certify the wine quality of the "Vinos de la Tierra" 3 Riberas. The system used by this Control Board (INTIA) has been accredited by ENAC (the Spanish Accreditation Body), in accordance with standard UNE-EN ISO/IEC 17065:2012. General requirements for bodies carrying out product certification:

• Authorisations
• Certified operators.