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Gemstone refractometers are available both as classic optical instruments and as electronic measurement devices with a digital display. [3] In marine aquarium keeping, a refractometer is used to measure the salinity and specific gravity of the water. In the automobile industry, a refractometer is used to measure the coolant concentration.
In the pulp and paper industry, inline process refractometers are used in the energy recovery from black liquor recovery boilers by accurately measuring solids in the black liquor. [4] In the food and beverage industry, inline process refractometers are used to measure dissolved solids, most often as sugar content, measured in degrees Brix.
Refractometers are frequently used by grape growers and kiwifruit growers for Brix testing of sucrose levels in their fruit. Refractometry is also used in the gelatin industry. To convert the RI of a gelatin sol (reported in Brix) to a gelatin concentration, one need only multiply by eight-tenths (0.8). A sol with a 10.0 RI would therefore be 8 ...
This is commonly achieved using a measurement of refractive index (refractometer) or the angle of rotation of polarization of optically active sugars (polarimeter). Saccharimeters are used in food processing industries, brewing, and the distilled alcoholic drinks industry.
Handheld variants are used in agriculture by, e.g., wine makers to determine sugar content in grape juice, and inline process refractometers are used in, e.g., chemical and pharmaceutical industry for process control. In gemology, a different type of refractometer is used to measure the index of refraction and birefringence of gemstones. The ...
Pages in category "Refractometers" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. ...
A diagram of the general front-view of a differential refractometer. A differential refractometer (DRI), or refractive index detector (RI or RID) is a detector that measures the refractive index of an analyte relative to the solvent. They are often used as detectors for high-performance liquid chromatography and size exclusion chromatography ...
Polarimeters are used in the sugar industry for determining quality of both juice from sugar cane and the refined sucrose. Often, the sugar refineries use a modified polarimeter with a flow cell (and used in conjunction with a refractometer) called a saccharimeter.