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Title: Very effective, easy to use, wine preserver
Review: The can I bought at Christmas is still blowing strong after probably 50 uses. The heavier than air inert gas sinks to the bottom of the air space in a sealed bottle so you don't have to completely re-fill the bottle with the gas. It keeps oxygen off the surface of the wine, preventing oxidation (over-airing and turning to vinegar). The combination of gasses is just right to achieve this purpose without acidifying the wine any further (low CO2 content so no carbonic acidification). I've had a half-drunk bottle keep very nicely as long as 10 days after being re-corked with a 3-second blast of this product. Great stuff.
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