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Title: Stoppers do not hold negative pressure
Review: The Vacuum devise is better than my others (I have one in each of our homes), but, as the pictures illustrate, the sharp angle on the stoppers does not allow the stopper to seal over a long enough area of the bottle neck to hold. The negative pressure is gone in an hour or so. I am going to try and order different stoppers, but it would be cheaper to order a different model.
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