MedSolut AG

Buy areometer - for precise density measurements of gases

Hydrometers,also known as areometers are versatile tools in many laboratories. Discover the assorted range of hydrometers at MedSolut and find the measuring instrument that is best tailored to the needs in your laboratory. To make sure you buy the best hydrometer, our friendly and competent customer service is ready to help you.

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Areometer: Definition & Applications

The areometer is an instrument for measuring the density or specific gravity of liquids. It is also called a hydrometer, density gauge, hydrometer or hydrometer. Such laboratory analyzers are used in very many fields and through numerous types of applications. For example, the hydrometer is used in ...

  • ... wineries or distilleries, where the sugar content in the must (must weight) or the ethanol content is to be determined. It is also used to measure the acidity of wine vinegar.

  • ... laboratories that measure acid density to determine the state of charge of car batteries.

  • ... laboratories that perform slurry analyses to examine soil samples and suspensions for particle size distributions (soil sample hydrometers).

  • ... the chemical industry, where it helps to identify substances. It can also be used to determine the concentration of salt solutions such as seawater. Likewise, it can be used to measure the sugar content of liquids such as honey (saccharimeter) or the water and milk content of products in dairies (lactodensimeter).

Areometers can be optimized for countless other special applications, including alcoholometers, acid and alkali hydrometers, beer and beer wort hydrometers, urine testers, milk hydrometers, liquid gas hydrometers, and so on. Thus, the measuring instruments are suitable for alcohol, sea or salt water or even honey investigations.

Info: A pycnometer is used to determine the density of solids or liquids, and a hydrometer is used to determine the density of gases.

If you decide to buy a hydrometer from MedSolut, it is advantageous if you know exactly what the laboratory analyzer is to be used for and in which measuring range. Our customer service can provide you with the best possible advice in this matter and determine the hydrometer that is right for you.

How does the hydrometer work?

The function of a hydrometer follows Archimedes' principle

  • The measuring instrument is immersed in a liquid and displaces it. It is displaced until the weight force of the displaced liquid is equal to the weight force of the immersed hydrometer(static buoyancy).

  • The smaller the density of the liquid, the further the measuring instrument is immersed in it as a body of the same weight (in this case, a scale hydrometer).

  • For liquids of different density or weight, the weight of the sinking body (in this case weight hydrometer) must be artificially increased if it is to sink to a certain point. The weight must be increased as much as the density increases.

Types of areometers: Constructional designs

Hydrometers are floating bodies made of glass that are immersed in a liquid during the measurement process. They sink until the buoyancy forces balance the hydrometer weight. On the basis of this, density values can be determined. Depending on the determination and application, the laboratory measuring instruments differ. The most important ones are the scale hydrometer and the weight hydrometer, the construction of which is described below:

Scale areometer

A scale areometer consists of a hollow glass body, a float filled with mercury or lead shot, a scale and a spindle. The ball is located at the lower end of the glass body, which terminates at the top in the spindle. Handling: The laboratory hydrometer is immersed vertically and with a rotating movement into a liquid. The hydrometer will sink to a certain point on the spindle. When the meter is stationary, the value can be read at the lowest point of the liquid column (lower meniscus). Depending on the liquid and density, a hydrometer must of course be selected that corresponds to the approximate expected density of the liquid to be determined. The deeper the hydrometer is immersed, the lower the density will be.

Weight areometer

The weight hydrometer is also called a hydrostatic balance. It is used to determine the absolute and specific weight and density of a solid as well as the density of various liquids. There are various types of construction among weight hydrometers, but they differ only slightly. They generally consist of a hollow body made of glass or sheet brass and provide a support for the bodies to be measured and any additional weights. Application: A sample of the body to be measured is placed on each of the bottom-mounted cup of the half-cone and the top cup. The sample of the half cone should then be surrounded by liquid all around. As many additional weights are placed on the upper dish until the hydrometer is immersed to a certain mark.

Operating the hydrometer: instructions in 7 steps

When you purchase a hydrometer, it is important to operate it properly so that it will last and provide you with many years of service in your daily laboratory routine. First and foremost, you should always handle it with care, as the glass body is fragile. In addition, the following steps are advisable:

  1. Before use, determine that the vitreous humor is dry and clean .

  2. After cleaning, touch the hydrometer only above the scale .

  3. Make sure that the liquid to be tested is free of dirt residues and does not throw any bubbles.

  4. Stir the liquid carefully before measuring to ensure a uniform temperature. Measure accordingly according to the reference temperature indicated on the hydrometer.

  5. Determine the surface tension and, above all, the temperature of the liquid, as its density is temperature-dependent. Make corrections if necessary. You can also use a thermometer built into the instrument for this purpose.

  6. Immerse the hydrometer and make sure that it does not come into contact with the liquid more than 5 mm above the reading point: if it sticks, readings may be falsified.

  7. Do not take a reading until the hydrometer has reached the equilibrium position and is stationary without touching the wall of the vessel.

To read the areometer you purchase correctly, you must orient yourself to the elliptical base around the stem: This is visible below the liquid level and becomes a dash when you look up. Where this line and the scale meet is the reading point.

Buy areometers from top manufacturer: Ludwig Schneider

If you want to buy a areometer, Ludwig Schneider is the right manufacturer. The company has been manufacturing high-end measuring instruments for laboratories since 1910 and stands for the highest quality and precision in hydrometers, hydrometers, precision thermometers and much more. Today, the manufacturer with quality ""Made in Germany"" is one of the leading manufacturers of high-precision measuring instruments for temperature and density worldwide. The devices are characterized not only by the most accurate measurement results, but also by simple and reliable operation and long durability. The all-round service for all customers covers all areas and is almost unique in terms of professionalism and customer friendliness - especially in this field.

Buy the right areometer:

Find selected hydrometers from the top manufacturer Ludwig Schneider in the MedSolut range. Let our professional customer service if you want to buy the optimal measuring instrument for your laboratory and benefit from our comprehensive service offer. Contact us at +49 30 2096579 00 or by e-mail at: We look forward to hearing from you!