Refractometer Applications

In the world of refractometers there are many different models and styles

. They can measure a wide variety of products from many different industries. Products include, but are not limited to:

Brix (Sugar)

Refractive index

Specific gravity

Salt

Clinical samples

Industrial machine cooling oil

Moisture in honey

Hydrogen peroxide

Antifreeze and coolants

and much more

Almost all fruits such as apples, mandarin oranges, tangerines, pears, grapes, melons, grapefruit, etc. are measured for Brix value at orchards. Fruit growers in general sample measure the Brix value of fruits before harvesting in order to optimize the harvest time for shipping just as the fruits are about ready to eat. In addition to fruit growers, Brix scales are widely used in various facilities of agriculture cooperatives for sorting and grading fruits by Brix value as well as for controlling and uniforming fruits in quality and grade. Moreover, Brix refractometer scales are also used for researching the relationship between sugar content in fruits and environmental factors such as the kinds of and quality of fertilizer, height of the fruit tree, water content of soil during the growing., Harvest time, variety of fruit, etc. The results of the research are utilized for guidance to the fruit growers, to improve the quality and quantity of future harvests. The ATAGO PAL-1 Refractometer is a very popular model to use for this testing process.

In addition to the measurement of liquid solutions, ATAGO refractometers can also be used for measuring the refractive index of solid samples such as glass, film, etc.. For measuring solids, the sample must meet certain requirements in shape, service condition and transparency. Some samples require the use of contact liquid, test piece, etc. Some plastic and film samples have the characteristic of double refraction. The ATAGO 3T ABBE refractometer can measure such samples with the polarizing eyepiece.

Anti-freeze solution whose main ingredient is ethylene glycol or propylene glycol is widely used in car radiators, as the cooling medium for central air conditioning systems, freezers and refrigerators, cooling coils, cooling fixtures, etc. The higher the concentration of the sample, the lower the temperature at which ethylene glycol or propylene glycol will freeze. For many applications it is necessary to adjust the freezing temperature of anti-freezing solution so that does not freeze under specific operating temperature. Hand held ATAGO refractometer models BC and BCF have the graduations of concentration and freezing temperature both Celsius and Fahrenheit of ethylene glycol and propylene glycol.

by: Kathy Brasch

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