refractometer
American Heritage Dictionary:
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re·frac·tom·e·ter
(rē'frăk-tŏm'ĭ-tər) 
n.
Any of several instruments used to measure the index of refraction of a substance.
n.
Any of several instruments used to measure the index of refraction of a substance.
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refractometer
Barron's Wine Lover's Companion:
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refractometer
[ree-frak-TOM-ih-tuhr] An instrument used in winemaking to measure the sugar content of grapes and must. A refractometer, which can be used right in the vineyard, works by placing a drop of juice between the refractometer's prisms and reading the angle at which the light bends. The angle will vary depending on the juice's sugar content. This refractometer reading is described in terms of brix in the United States, baumé in France, and oechsle in Germany.
Oxford Dictionary of Biochemistry:
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refractometer
an instrument for measuring refractive index.
| refractivity, refractive index, refraction | |
| refractory, regeneration, regeneration time |
Saunders Veterinary Dictionary:
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refractometer
1. an instrument for measuring the refractive power of the eye.
2. an instrument for determining the indexes of refraction of various substances.
3. an instrument for measuring the concentration of solutes, e.g. protein in solutions, immunoglobulins in serum.
Wikipedia on Answers.com:
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Refractometer
A refractometer is a laboratory or field device for the measurement of an index of refraction (refractometry). The index of refraction is calculated from Snell's law and can be calculated from the composition of the material using the Gladstone–Dale relation.It is a hand held device.
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Contents
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Types of refractometers
There are four main types of refractometers: traditional handheld refractometers, digital handheld refractometers, laboratory or Abbe refractometers, and inline process refractometers. There is also the Rayleigh Refractometer used (typically) for measuring the refractive indices of gases.
In veterinary medicine, a refractometer is used to measure the total plasma protein in a blood sample and urine specific gravity.
In drug diagnostics, a refractometer is used to measure the specific gravity in human urine.
In gemology, a refractometer is used to help identify gem materials by measuring their refractive index.
In marine aquarium keeping, a refractometer is used to measure the salinity and specific gravity of the water.
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Gemology refractometer used to test light bending inside gemstones
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a wine grower with refractometer
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density evaluation of abdominal fluid of a cat with FIP by a refractometer.
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Smart handheld digital refractometer
Scales typically used
See also
- Ernst Abbe
- Refractive index
- Gemology
- Must weight
- Winemaking
- Harvest (wine)
- Gravity (beer)
- High-fructose corn syrup
- Cutting fluid
- German inventors and discoverers
- High refractive index polymers
Further reading
- Sella, Andrea (November 2008). "Abbé's refractometer". Chemistry World: 67. http://www.rsc.org/chemistryworld/Issues/2008/November/AbbesRefractometer.asp.
External links
- Refractometer – Gemstone Buzz uses, procedure & limitations.
- Rayleigh Refractometer: Operational Principles
- Refractometers and refractometry explains how refractometers work.
- Refractometer products and functions
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Copyrights:
American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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Oxford Food & Nutrition Dictionary
A Dictionary of Food and Nutrition. Copyright © 1995, 2003, 2005 by A. E. Bender and D. A. Bender. All rights reserved.
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Barron's Wine Lover's Companion
Wine Lover's Companion. Copyright © 2003 by Barron's Educational Series, Inc. All rights reserved.
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Wiley Dictionary of Flavors
Copyright © 2008 by Wiley-Blackwell. Wiley and the Wiley logo are registered trademarks of John Wiley & Sons, Inc. and/or its affiliates in the United States and other countries. Used here by license. Read more
Oxford Dictionary of Biochemistry
Oxford University Press. Oxford Dictionary of Biochemistry and Molecular Biology © 1997, 2000, 2006 All rights reserved.
Read more
Saunders Veterinary Dictionary
Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.
Read more
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