Zhenquanliang Zhang Siman: Method for measuring the alcohol content of white wine that has just flowed from the steam brewing machine

2021/10/0918:01:19 food 1685

The hot wine that has just flowed out of the steam brewing equipment, the brewing master can roughly judge the degree of white wine by looking at the hops, but if you want to measure accurately, you still need to use a wine meter. Next, Mr. Zhang Siman, the technical consultant of Zhenquanliang's brewing technology, shared with you how to accurately measure the alcohol content.

When we use all-grain brewing equipment to make wine, we have to "pinch the head and remove the tail" to split the wine. Usually, the head wine of grain wine is more than 70 degrees, methanol_ methanol_ The higher content can be solved by aging or double steaming.

How to measure alcohol content:

Equipment: alcohol meter, thermometer, measuring cylinder

1. Pour the white wine into the measuring cylinder, and pour the part of the white wine to be measured into the measuring cylinder. Do not overfill it.

2. Put the alcohol meter into the measuring cylinder vertically, put the thermometer and the alcohol meter into the measuring cylinder and do not stick to the wall of the cylinder. When the measured alcohol level is unknown, you should first select an alcohol meter with a high range to measure, if the alcohol meter readings all float For liquid level, use a low-range alcohol meter to measure.

3. Read the measured alcohol value, wait a moment, and look straight to see the temperature and alcohol level.

4. Calculate the correct alcohol content according to alcohol content and alcohol content conversion.

Alcohol is directly related to temperature. The observed alcoholicity is high when the temperature is high, and the observed alcoholicity is low when the temperature is low. The alcohol degree usually refers to the degree of wine when the temperature of the wine is 20 degrees Celsius. This temperature is the standard, and other temperatures are converted according to the following formula.

Alcohol and temperature correction rough calculation formula:

actual alcohol content + (20 degrees Celsius-actual alcohol temperature number) * 0.4 = the temperature of the wine at 20 degrees Celsius

Precautions for

measurement

1. Clean the alcohol meter, thermometer and measuring cylinder before use,So as not to affect the reading;

2. Stir the white wine thoroughly before measuring, and float the alcohol meter gently in the wine after the frothing disappears. When the alcohol meter floats in the upper and lower three divisions of the detection point, there is a meniscus. Read on the surface again, otherwise the reading is not accurate;

2. Due to the surface tension, a meniscus will appear at the contact between the alcohol surface and the alcohol meter. When reading the value, the horizontal plane shall prevail;

3. If No conversion, it is recommended to put the thermometer in first, and then put the alcohol meter in when the temperature is 20 degrees. When the wine temperature is 20 degrees, the measurement result is the most accurate;

4. fermented wine without distillation_ span17span cannot be measured by this method, such as sweet wine, fermented fruit wine.

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