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 ?
The elaboration of an expanded Chataway table for the refractometric measurement of honeys with values higher than 25g water/100g honey, to be validated, is suggested.
L, dl- and 1-isomers can be distinguished optically by using refractometric techniques that determine the specific rotation and therefore the optical purity of the isomer.
Molecular concentration is measured using either refractometric methods (interference) or ultraviolet absorption.
Tenders are invited for Delivery refractometric detector for research grants and internal
A previous study in racing pigeons (Columba livia) established normal urine osmolality for this species (6) but did not correlate the results with refractometric USG values.
From the arrangement of samples in the refractometric measurement [8] with respect to the component of the electrical field [E.