Testing labs in Bar-Sur-Seine

ISO/IEC 17025 accredited by COFRAC (No. 1-1534) testing laboratory (accreditation status: active). Located at 10110, Bar-Sur-Seine, France.

O2C (Œnologie Conseil Champagne) is a specialist oenological laboratory and technical consulting service operating within the CSGV cooperative group (Coopérative du Syndicat Général des Vignerons), a historic viticulture and winemaking supply cooperative with roots in the Champagne appellation since 1947. The Bar-sur-Seine site, located in the Aube département, is one of two O2C laboratory locations serving the entirety of the Champagne wine zone — the other being in Épernay in the Marne — making O2C a geographically distributed analytical and advisory partner for Champagne producers across both primary sub-regions of the appellation. From independent growers and récoltants-manipulants to larger négociant houses, O2C serves the full spectrum of Champagne wine producers who require reliable laboratory analysis and expert oenological guidance throughout the annual production cycle. The laboratory conducts a full range of routine and official wine analyses (analyses courantes et officielles), covering three primary categories: fine wine analyses (fines), competition entry analyses (concours), and export certification analyses (export). Standard oenological analytical panels in this context include determination of free and total sulfur dioxide (SO₂), volatile acidity, total acidity and pH, alcohol by volume, residual sugars (glucose and fructose), malic acid and lactic acid profiles reflecting malolactic fermentation progress, and tartaric acid quantification. For Champagne specifically, titratable acidity, dissolved carbon dioxide pressure, and organoleptic assessment are critical quality parameters routinely evaluated. Analyses are conducted in accordance with methodologies recognized by the Organisation Internationale de la Vigne et du Vin (OIV) and with French regulatory requirements governing wine trade and export certification, supporting producers in meeting both domestic and international market compliance requirements. Beyond classical physicochemical analysis, O2C maintains a dedicated sensory analysis and tasting room (salle de dégustation et d'analyse sensorielle) used for a range of applied evaluations including winemaking process validation, the assessment and purchase of wines sur lattes (wines resting on lees prior to disgorgement), and the development and refinement of blended cuvées (assemblages). This facility plays an important role at the critical decision-making junctures unique to Champagne elaboration, where the construction of a house blend demands both quantitative analytical data and calibrated sensory judgment. The combination of physicochemical analysis and structured sensory evaluation within the same organization allows producers to validate both the technical and organoleptic dimensions of their cuvées in a single partnership. O2C's oenological innovation program (innovations œnologiques) encompasses the design and implementation of specific technical itineraries tailored to emerging production philosophies and market demands. This includes support for parcel-specific cuvée production (élaboration de cuvée parcellaire), the development of sulfur-free or low-sulfur vinification protocols (vinification sans soufre), and the integration of bioprotection strategies using non-Saccharomyces yeast cultures and other biological tools to stabilize wine without reliance on chemical additives. These services reflect O2C's positioning at the intersection of traditional Champagne craft and contemporary oenological science, serving producers who are innovating within the appellation's established technical framework. A dedicated support stream covers organic winemaking, including ongoing advisory services and regulatory monitoring (accompagnements et veilles concernant les réglementations dans le cadre de la vinification Bio) for producers operating under or transitioning to certified organic production. As European Union regulations governing permitted enological additives, maximum sulfite levels, and approved processing aids for organic wine continue to evolve, O2C's consultant oenologists provide structured compliance guidance that helps producers maintain quality while adhering to certification requirements. This regulatory expertise complements the laboratory's analytical services, allowing producers to document additive use, monitor permitted inputs, and prepare the analytical evidence needed for organic certification and export labeling. The O2C team comprises six qualified oenologist-consultants (œnologues-conseil) — Laurent Achddou, Sébastien Boever, Maximilien Danré, Camille Durdon, Aurélie Poulain, and Bernard Richet — alongside four laboratory technicians (technicien(ne)s de laboratoire) including Laura Barjot, Chloé Noiret, and Aurélie Dosso, distributed across the Épernay and Bar-sur-Seine sites. The oenologists function as direct technical advisors to individual producers, providing both laboratory-based analytical reports and in-field support at cellars and vineyards. This on-the-ground model of embedded consulting, paired with laboratory analysis, distinguishes O2C from purely analytical services and makes it a comprehensive technical partner across the full winemaking cycle from harvest through disgorgement. In addition to analytical and consulting services, O2C offers winery equipment rental (matériel de cuverie en location) including industrial mixers (mélangeurs), cartridge filtration units (filtres à cartouche), and cellar washing lances (cannes de lavage), enabling smaller producers to access capital equipment on a campaign basis without significant capital outlay. O2C also works with specialist external partners in fine filtration and advanced analytical techniques, expanding the scope of analyses available to clients beyond standard oenological chemistry. Recent collaborative field interventions have included on-site filtration operations using Sartorius Jumbo Star filtration systems at Champagne estates, illustrating O2C's capacity to mobilize advanced technical solutions in situ. The Bar-sur-Seine laboratory is located at 2 Impasse des Vignes, 10110 Bar-sur-Seine, and operates Monday through Friday from 8h to 12h and 14h to 17h, making it accessible to Aube-based producers throughout the working week. As part of the broader CSGV cooperative group — which operates over 18 supply locations across the Champagne appellation and references more than 5,000 oenological and viticultural products — O2C benefits from deep institutional integration within the regional production ecosystem. This network position, combined with a team of credentialed oenologist-consultants and a two-site laboratory infrastructure purpose-built for the Champagne production environment, makes O2C a credible and experienced analytical partner for wine producers requiring rigorous, regulation-compliant testing and hands-on technical expertise.