Argentina’s Wine Regulator Adopts Official Testing Compendium

Argentina’s National Institute of Viticulture has formally adopted a compendium of methods for analyzing wines and grape musts as the country’s official technical reference, a regulatory step meant to standardize how laboratory tests are carried out across the wine sector.

The measure was issued in Mendoza on Thursday, November 5, through Resolution 8/2026 and was published in the Official Gazette on Friday, November 6. The institute, known by its Spanish acronym INV, said the document will serve as an official and institutional reference within the agency’s regulatory powers and under current wine rules.

The resolution places the compendium at the center of Argentina’s oversight of wine products. INV said it is responsible for supervising viticultural products under the country’s General Wine Law and related rules, and that carrying out that role requires analytical methods that are reliable and harmonized. According to the text, the goal is to ensure that test results are consistent and traceable.

The compendium was prepared by the agency’s Directorate of Viticulture Studies and Development. INV said it was built on technical references from the International Organisation of Vine and Wine, widely known as the OIV, as well as methods that have already been made official by the Argentine institute itself.

In the resolution, INV said the compendium is intended to unify analytical procedures and keep testing methods up to date with scientific and technological advances. The agency also linked the move to the needs of domestic and international markets, a sign that it sees laboratory alignment as part of a broader compliance and trade framework rather than only an internal administrative change.

The institute also said that official and private interlaboratory enology testing carried out under a national program reinforced the need for harmonized methods. That experience, according to the resolution, showed the importance of having a common technical base to strengthen analytical quality, support continuous improvement and make results more comparable across the wine chain.

The regulation does not simply describe the compendium as guidance. By homologating it, INV gives it formal standing as the reference document for wine and must analysis within the scope of the agency’s authority. Must refers to freshly pressed grape juice, including juice that still contains skins, seeds or stems before fermentation is completed.

For wineries, laboratories and exporters, the move could have practical effects beyond the text of the resolution. A single official reference for testing methods can help reduce differences in how samples are analyzed from one facility to another, make official controls more consistent and improve the comparability of results used in compliance work and commercial transactions. That could matter in shipment approvals, product verification and disputes over analytical findings, especially for businesses selling into export markets where documentation and consistency are closely watched.

The resolution directs INV to publish the updated Compendium of Methods of Analysis of Wines and Musts on its website. The annex containing the document is to be available through the web edition of Argentina’s Official Gazette, according to the publication notice.

The measure was signed by Carlos Raul Tizio Mayer, president of the National Institute of Viticulture. INV said the decision was taken under powers granted by Argentina’s wine and appellation laws, along with a 2025 presidential decree. The legal text also says the agency’s legal affairs unit reviewed the measure before it was issued.

The adoption of the compendium comes as regulators and industry participants continue to put more weight on method standardization in quality control. In sectors such as wine, where official laboratory results can affect market access, classification, tax treatment and export documentation, the choice of method is often as important as the result itself. By giving formal status to a single compendium tied to both INV methods and OIV references, Argentina is moving to align its analytical framework more closely across public and private testing environments.