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HOW TO USE A HYDROMETER

£3.99

The hydrometer can be seen to be floating lower in the water. By measuring the specific gravity (SG) at the start and finish of your wine fermentation you can calculate the percentage alcohol produced.
The final specific gravity reading after completion of fermentation will also give you a good guide to the dryness or sweetness of your wine. Several points to bear in mind before taking a reading:

1. At the end of fermentation make sure the wine / beer is degassed. Freshly fermented wine or beer will contain large quantities of dissolved carbon dioxide gas. This should be removed by transferring the wine / beer from one jug to another by pouring at a height of about 15cm (6") up to 10 times. Do not heat the wine to drive off the gas.

2. To be absolutely accurate make sure your trial jar (holder for the hydrometer) is at least 50% wider than the hydrometer itself.

3. Use a good make like the Stevenson or Alla Hydrometer.

4. Spin the hydrometer as it is dropped into the liquid, then wait 30 seconds before taking a reading. Take the reading from the bottom of the meniscus - blow away the bubbles before taking the reading.

These readings below are the readings to aim for in the finished wine.
Less than 997 - dry to medium dry wine
997 - 1005 - medium to medium sweet wine
Greater than 1005 - sweet wine

Many people ask us how do I work out my alcohol levels? The best way is to take the starting specific gravity, from the finishing specific gravity and divide this by 7.36, ie 1080 - 990 = 90 divided by 7.36 =12.23% ABV. The other option is to acquire a Vinometer. This is a simple device you can pour a small sample of wine into which will give an ABV reading. It's simple and quite useful as a guide. Price is under 5

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This product was added to our catalog on Monday 17 March, 2014.

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