Is this 100% argon gas, or does it also have nitrogen?

The can says it contains a "custom blend of pure nitrogen (N2), carbon dioxide (CO2) and argon (AR)" It works very well.

How does it work and do you need a special stopper?

Looks like the inert gases displace oxygen to prevent oxidation. You do need a wine stopper to keep the inert gas in and additional oxygen out. Doesn't appear to need to be a special stopper though.

Is preservation performance affected if I lay the bottle on a rack after closing? I have a chiller which doesn't accommodate standing bottles.

No. It doesn't need a thick layer of gas to keep the wine protected as long as it stays still, but you might give it just a little more if it's on its side.

Can someone tell me why simply pouring the wine into a smaller bottle, or half bottle, filling to the brim, wouldn't accomplish the same thing?

It would accomplish the exact same thing...though you are the most industrious win drinker I have ever heard of. This is meant to be a quick and easy way to keep a partially full/empty bottle of preserved in its original bottle. There is always more than one way to skin a cat....this is just one of the easier ways.

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Wine Enthusiast Private Preserv Preservation Spray

Wine Enthusiast Private Preserv Preservation Spray

Product ID: 276662308

Details

Colour
Silver
Brand
Wine
Shape
Cyclindrical
Is dishwasher-safe
Yes
Global Trade Identification Number

⏳Preserves freshness for weeks to months

🍷120+ uses per can

🛡️Inert gas blend protects flavor

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8500 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🍾 Keep every pour as fresh as the first—because your taste deserves the best.

UNMATCHED LONGEVITY - Enjoy over 120 sprays per can—preserve your favorite vintages without worry.
VERSATILE PRESERVATION - Not just wine—perfect for spirits, olive oils, herbs, and fine vinegars, keeping them fresh for weeks or longer.
EFFORTLESS ECO FRIENDLY - No batteries or assembly needed; simply spray and reseal for seamless freshness.
SCIENCE BACKED PROTECTION - Custom blend of nitrogen, CO2, and argon creates a harmless gas blanket that locks in flavor and aroma.
FLAVOR INTEGRITY GUARANTEED - Unlike vacuum devices, it preserves the wine’s bouquet and delicate esters essential for taste.

The Wine Enthusiast Private Preserv Preservation Spray uses a premium inert gas blend of nitrogen, carbon dioxide, and argon to protect and extend the freshness of wine, spirits, and other delicate liquids. With over 120 sprays per can, it forms a harmless gas blanket that preserves flavor and aroma without stripping essential bouquet compounds, outperforming vacuum alternatives. Lightweight, battery-free, and easy to use, it’s the top-rated choice worldwide for maintaining the perfect pour days, weeks, or even months after opening.

Specifications

ASIN	B0000DCS18
Batteries required	No
Best Sellers Rank	#237,047 in Kitchen ( See Top 100 in Kitchen ) #508 in Wine Stoppers
Customer Reviews	4.5 4.5 out of 5 stars (1,212)
Date First Available	6 August 2012
Dishwasher safe?	Yes
Is assembly required	No
Item Weight	0.01 Ounces
Item model number	481 01 01
Item volume	8.57 Milliliters
Number of pieces	1
Product Dimensions	26.67 x 15.24 x 15.24 cm; 0.28 g

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TrustScore 4.5 | 7,300+ reviews

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