refractometer


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refractometer

 [re″frak-tom´ĕ-ter]
1. an instrument for measuring the refractive power of the eye.
2. an instrument for determining the indexes of refraction of various substances, particularly for determining the strength of lenses for spectacles.

re·frac·tom·e·ter

(rē'frak-tom'ĕ-ter),
An instrument for measuring the degree of refraction in translucent substances, especially the ocular media. See: refractive index.
[refraction + G. metron, measure]

refractometer

/re·frac·tom·e·ter/ (re″frak-tom´ĕ-ter)
1. an instrument for measuring the refractive power of the eye.
2. an instrument for determining the indexes of refraction of various substances, particularly for determining the strength of lenses for spectacles.

refractometer

[rē′frəktom′ətər]
Etymology: L, refringere, to break apart; Gk, metron, measure
an instrument for measuring the refractive index of a substance, used primarily for measuring the refractivity of solutions. See also refractive index.

re·frac·tom·e·ter

(rē'frak-tom'ĕ-tĕr)
An instrument for measuring the degree of refraction in translucent substances, especially the ocular media.
See also: refractive index
[refraction + G. metron, measure]

refractometer 

1. An instrument for measuring the refractive index of transparent objects. There exist several types: Abbé's refrac-tometer, which is based on the measurement of the critical angle at the interface between a sample and a prism of known index of refraction and uses white light whereas that of Pulfrich, which is based on the same principle as Abbé's, uses monochromatic light. As the refractive index of some materials is related to their water content, the handheld Atago CL-1 Soft lens Refractometer has been calibrated to provide a reading of the percentage of water content of soft contact lenses.
2. See optometer.

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.
References in periodicals archive ?
Refractometer and osmometer measurements of the Hispaniolan Amazon parrot urine were highly correlated (r = 0.
Hemolymph samples were analyzed for THP at the pound using the refractometer, and 1 mL hemolymph was placed in SBS for fluorescence analysis.
Hanna HI 96801 Digital Refractometer: The HI 96801 Digital Refractometer is a rugged, portable, water-resistant device that's a little larger than some other portable units.
With the prism method, any optical goniometer (Burchard, 1998) or spectrometer may be employed as a refractometer, simply because the refraction angle of the prism edge ([omega]) and that between the incident and the deviated light rays ([delta]) is to be measured.
Calibration of the refractometer also is an easy task, but requires a bit of care.
will unveil the Waters GPC/Viscometry System, said to be the first gel-permeation chromatograph to be equipped with a viscometer and a refractometer.
The low-cost eMaple Maple Syrup Refractometer provides an instant digital field determination of the sugar content, or Brix level, of maple sap or maple syrup.
Tenders are invited for Comprehensive Annual Maintenance Contract Of Hospital Equipments, Furniture And General Items,Apex Locator,Apnoea Monitor,Auto Refractometer,Air Purification System
Depending on the instrument type, application and traceability requirement, a choice can be made from a number of Certified Reference Materials offered by Bellingham + Stanley, a Xylem brand and UKAS accredited calibration laboratory, that may be used to verify almost any make of refractometer or polarimeter.
Labcell is adding the Bellingham+Stanley OPTi digital hand held refractometer to its range of instrumentation for the food and drink industries.
For more on refractometer suppliers, see Wines & Vines 2009 Buyer's