This guideline applies to the screw capping of still wines with a metallic tamper-evident closure which needs to be snapped before it can be opened. Application on the BVS finish is done by reforming the closure. This reform provides a double seal, one on the top and the other on the side of the finish. The increase in the contact surface between the liner and the glass optimises the sealing performance and the resistance to a slight internal pressure in the bottle. Sometimes, non-reform closures are applied on BVP finishes. For such application, refer to guideline n° 2. The user must ensure that this combination is technically acceptable. The term "still wines" does not exist in the legislation. In this category are all wines which are neither sparkling, nor soft or natural, etc, and for which the over-pressure due to carbon dioxide is below one bar in sealed containers when kept at a temperature of 20°C. Still wines are defined as having a level of carbonation below 1.2 grams per litre of liquid. This guideline does not apply to closures with a threaded plastic insert.
