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Vinventions strengthens SÜBR’s positioning and publishes the consistency of its closures

13 Nov 2026

Page 1 photo (SÜBR closures in front of bottles), cropped to 1200 × 630 px Credit: ©lesptitsoignons/Vinventions

With the OVR (Oxygen Variation Rate), a new consistency indicator, Vinventions strengthens the positioning of its SÜBR closures, a shift embodied by the signature “Worthy of the finest wines”.

Two batches of closures can show the same average oxygen permeability and yet not behave the same way. Vinventions now publishes this consistency index on every product sheet, showing how consistent the closures within a single batch are.

Why average permeability is not enough

A closure’s permeability is expressed by its OTR (Oxygen Transmission Rate): the amount of oxygen that passes through it in one year. A batch’s OTR is an average. If all its closures let through similar amounts, the bottles of a given cuvée evolve in a comparable way. If not, their aromatic profiles may diverge.

"What matters to a winemaker is that the intended aromatic profile is preserved

in every bottle of a cuvée. Consistency thus becomes a selection criterion in its own right, on a par with average permeability.”

Christine PASCAL

Director of Enological Research, Vinventions

How to read the OVR, and what it says about SÜBR

The OVR expresses, as a percentage, the spread of OTR around its average, across 20 closures from the same batch. The lower it is, the more consistent the batch. As an illustration, for a closure with an average permeability of 1 mg/year, an OVR of 50% means that the closures in the batch deviate from this average by around 0.5 mg/year, above or below.

For SÜBR closures, the OVR is 11%. This result reflects the very high uniformity that extrusion, the manufacturing process behind SÜBR closures, gives them.

A measurement method developed by Vinventions in 2011

The OVR is based on a permeability measurement method developed by Vinventions using NomaSense O₂ technology: a sensor glued inside clear bottles is read through the glass. This non-destructive method, combined with a mathematical model of oxygen diffusion, was published in 2011 and compared with the Mocon reference method.

“The Mocon method can only analyse a limited number of closures

and requires a long stabilisation period. We developed a method combined with a predictive model that lets us measure more closures in less time. This is what makes it possible to calculate the OVR.”

Jean-Baptiste DIEVAL

Heard of Certification Center, Vinventions

Study in partnership with Changins: SÜBR’s consistency revealed

In July 2026, Vinventions launched a study on red wine longevity with Changins, School of Viticulture and Oenology (Switzerland). Its first stage, closure selection, highlighted SÜBR’s superior consistency compared with competing cork-based solutions, whose OVR ranges from 15% to over 100%.

“To better define the longevity of red wines, we will follow wines in bottle for five years

This study requires knowing precisely what each closure contributes. It is the first stage of our collaboration with Vinventions.”

Benoît BACH

Professor of Oenology, Changins, School of Viticulture and Oenology

A brand signature backed by measurement

For SÜBR, being worthy of the finest wines means providing every bottle of a cuvée with closures that behave in a highly uniform way, and proving it.

“An average permeability describes a batch, not each of its closures.

We publish the OVR to assure our customers that the consistency of our closures is measured, not assumed.”

Romain THOMAS

Product Director, Vinventions

THE SÜBR RANGE AT A GLANCE

SÜBR M and SÜBR F: low permeability (0.20 mg/year).
SÜBR F+: ultra-low permeability (0.08 mg/year).
Made in Rivesaltes (France) by extrusion, from cork particles and a binder, with no polyurethane glue.
Releasable TCA guaranteed below 0.3 ng/L.
SÜBR F and F+ replicate the look of a natural cork stopper.