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Testing The Alcohol Level Of A Finished Wine

Vinometer, Refractometer, Gravity HydrometerHi Kraus,

What kind of alcohol tester other the vinometer can I buy to measure the alcohol of my finished homemade wine?

Thanks Joshua

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Dear Joshua,

Of all the wine making products that exist, the vinometer is the only one that home winemakers can practically use to test the final alcohol level of a finished wine. It is somewhat accurate when testing a dry wine, but if your wine has any residual sugars, the reading will be thrown way off.

Most wineries rely on a refractometer and/or a gravity hydrometer to determine the alcohol level of a wine. They are both very accurate and easy to use. The drawback is they both require that you take two readings, one before the fermentation and another after.

If you forget or miss taking the first reading, you will not be able to determine the finished alcohol level. The two readings of either the refractometer or gravity hydrometer need to be compared to determine the alcohol level.

There are other ways of testing the alcohol in a wine beside using the vinometer, refractometer or gravity hydrometer, however this brings us into the realm of laboratory equipment and is left for only the larger wineries to practically afford.

Best Wishes,
Customer Service
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

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Comments (2)

Name: Kathy
Time: Wednesday, January 30, 2013

My homemade plum wine is delicious! I started it in August 2012 with a 1.08 reading and I'm at 1.0 now in January 2013. It has a wonderful sweetness and bouquet of red plum and I want to bottle it now but when I removed the airlock, it was a little fizzy. This wine tastes perfect and I want to keep the sparkle, so should I go ahead and use champagne bottles and caps to preserve this slight fizz or add the finishing agents and cork it?

Name: Customer Service
Time: Wednesday, January 30, 2013

Kathy, I completely understand you wanting to keep the carbonation or sparkle in the wine, but bottling based on the specific gravity can get you into trouble with exploding bottles. It sounds like you don't necessarily want the full sparkling experience, but rather just some fizzy in the wine. What I strongly recommend doing is to let the fermentation completely finish and be given time to clear. Then add to the wine between 1 and 2 ounces of sugar for each gallon of wine, and a packet of Champagne yeast for each 6 gallons of wine and bottle in Champagne bottles. DO NOT bottle in ordinary wine bottles. They will not even begin to hold the pressure.

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