Hydrometers measure the relative density of liquids by incorporating the concept of buoyancy. These hydrometers are typically graduated and calibrated with single or multiple scales, such as specific gravity and API gravity. Usually, a hydrometer features a hollow and sealed glass tube that is wider at the bottom for effective buoyancy, a ballast, such as mercury or lead, for enhanced stability, and a narrow stem with measuring graduations. The liquid that is supposed to be tested is poured into a long graduated cylinder and the hydrometer is lowered into the cylinder gently until it starts floating freely. The point of contact where the liquid surface touches the hydrometer stem can be correlated to the relative density. Hydrometers may contain a number of scales that correspond to the properties correlating to the relative density.
All hydrometers utilize Archimedes’ Principle, which states that an upward buoyant force is automatically exerted on a body that is immersed in a liquid. Whether partially or fully submerged, the force exerted by the liquid on the body equals the weight of liquid displaced by the body. The lower the density of the fluid, the deeper will be the hydrometer sink. The calibrated stem of the hydrometer cylinder gives a numerical reading of the density of the fluid.
Specialized hydrometers are available to measure the density of various liquids. For instance, a saccharometer measures the density of sugar in a liquid and a lactometer measures the density of milk.
Hydrometer Market: Factors Impacting Growth
Advancements and upgrades in the field of instrumentation engineering are expected to facilitate the growth of the global hydrometer market. Availability of specialized hydrometers is also expected to drive the global market. High presence of vendors offering high quality durable hydrometers is also expected to boost the growth of the global market. Companies and governments are making huge investments in the environmental fluid mechanics field. This factor is expected to be the primary driver for the global hydrometer market. High adoption rate of hydrometers in the agriculture industry for sieve analysis is also expected to enable steady growth of the global hydrometer market.
Hydrometer Market: Segmentation
On the basis of scale, the global hydrometer market can be segmented into:
Modern hydrometers measure the density of a liquid on the specific gravity scale. However, the API gravity scale is utilized by the petroleum industry, Baumé scale by chemical and pharmacology industries and the Brix scale is used in the food and beverage industry. Hydrometers calibrated with the Twaddell scale were formerly used in the dyeing and bleaching industries.
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With regards to specialization, the global market can be segmented into:
As per end use, the global market can be segmented into:
Hydrometer Market: Regional Outlook
Hydrometer Market: Key Players
Some of the major players operating in the hydrometer market include Dynalab Corporation; Cole-Parmer Instrument Company, LLC; APT Instruments; Dual Manufacturing Co., Inc.; Koehler Instrument Company, Inc.; Terriss Consolidated Industries, Inc.; and Density Analytics, LLC, among others.
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