Alcohol meter 30-40% abv Laboratory quality
Measures in steps on 0.1% alcohol - VERY accurate.
We don't ask for a credit card number - you pay us from your own bank account.
We use only well known couriers with tracking numbers to deliver your order to your doorstep.
How to use a hydrometer / alcohol meter
Unfortunately these delicate instruments cannot be shipped by Courier. Only for collection at our shop. You are however free to arrange your own courier to collect it from us.
When you receive your hydrometer/alcohol meter - be CAREFUL how you open it!
How to open the plastic box the hydrometer/alcohol meter is in:
A few aspects are important when using a hydrometer or alcohol meter:
Hydrometers are in effect instruments that measure the density of liquids. Inside each hydrometer is a scale that indicates what the meter reads.
An SG hydrometer measures the relative density of a liquid compared to that of pure water at a specific temperature. (This temperature is called the calibration temperature.) How to correct reading at other temperatures is shown later.
SG (Specific Gravity) is an indication how the density of a liquid differs from that of pure water. Pure water measures an SG of 1.000 while an alcohol and water mixture will read below 1.000 (i.e. 0.993) and a sugar/water solution
A Guy-Lussac hydrometer measures % alcohol by volume and we call it an alcohol meter. An alcohol meter will measure the amount of alcohol (ethanol) mixed with water and give a % alcohol reading.
Important: An alcohol meter (hydrometer) cannot give a correct reading when we want to measure a liquid that contains alcohol, water AND sugar. The alcohol is less dense than water and the sugar is more dense than water and they sort of cancel each other out with non-applicable readings as a result.
Many other density related scales are used in various industries such as Degree Brix, Balling, Plato, etc. to give indication of, for example, the weight of sugar dissolved in water (i.e. Brix and Balling)
Hydrometers are very fragile glass instruments with lead/steel ballast balls at the bottom to allow it to float upright in a liquid. Even a slight bump of glass against glass at the bottom of a hydrometer will crack it and render the hydrometer useless.
It is important to get into the habit of inserting a hydrometer into a measuring cylinder so that the bottom does not crack.
Take a measuring cylinder that is suitable to use (big/tall enough but not too big) with the specific hydrometer
Now tilt the measuring cylinder horizontal and slowly slide the hydrometer into the measuring cylinder until it just touches the bottom of the cylinder.
Now tilt the cylinder upright and start filling it with liquid until the hydrometer floats.
A reading can now be taken on the hydrometer at the level of the liquid.
All good hydrometers indicate the temperature at which they are calibrated to give accurate readings. Most hydrometers from Distillique are calibrated at 20 degree C.
If we use a hydrometer in liquid with a temperature other than the calibrated temperature, a correction should be made on the reading. The following table provide (simplified) correction factors to use:
Examples to use this table:
For alcohol and density scaled hydrometers:
Say you measure the % alcohol in a water/alcohol mix which has a temperature of 37 degrees C and the reading on the meter indicates 43%. To correct it we do the following:
Reading(corrected) = Reading(uncorrected) x Correction factor.
= 43 x 0.949 (from the table above at 37 degrees C)
That implies that the correct % alcohol at 37 Degree C is 40.8 %abv.
For density measurements we use it exactly in the same manner.
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