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 usefulness and limitations of handheld refractometers in veterinary laboratory medicine: an historical and technical review.
The THP concentration was determined using a Reithert VET 360 analog blood animal protein refractometer and was measured in grams per 100 mL.
Meter refractometer model 10400A [instruction manual].
SG is inexpensive; a handheld refractometer and transfer pipettes are the only equipment needed, whereas the CR assay is a microtiter plate-based assay.
The long-forgotten refractometer is finding a real niche in the new millennium.
MISCO designs, manufactures, and sells a variety of refractometers, including: digital bench-top laboratory refractometers, inline process control refractometers, digital handheld refractometers, and traditional handheld instruments.
Clinical labs, which often demand exacting standards for their instruments, use refractometers to perform in vitro diagnostics, to conduct urinalysis or to determine serum protein content.
Labcell has introduced the PAL-3 handheld digital refractometer that operates across the full range of 0 to 93% Brix 9 the industry-standard measurement unit for sugar content.
The primary markets for refractometers are food and beverage, chemical, clinical and agricultural applications.
Plus, a digital refractometer removes the subjectivity associated with analog refractometers that require users to interpret where a boundary line crosses tiny scale divisions.
METTLER TOLEDO has added Titration as the newest instrument line on the LabX platform which already backs : balances, melting point instruments, Quantos weighing solutions, density meters and refractometers.
IRIS represents a new standard in refractive index sensing and is only a fraction of the cost of other inline/process refractometers," said Michael Caminer, from the MISCO marketing group.