The rate of oxygen ingress through different types of wine closures is influenced by several factors related to the closure material, the sealing process, and environmental conditions. For natural cork, factors include cork quality, density, and dimensions. Higher-quality corks, with fewer lenticels (pores) and a denser structure, generally have lower oxygen transmission rates (OTR). Corks with larger diameters or longer lengths tend to provide a better seal and reduce oxygen ingress. The sealing process also affects OTR. Proper insertion of the cork, ensuring a tight and consistent se....
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