densitometer

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densitometer

 [den″-sĭ-tom´ĕ-ter]
1. an instrument for determining density or specific gravity of a liquid.
2. an instrument used to measure the degree of exposure (darkening) on photographic or x-ray film.

den·si·tom·e·ter

(den'si-tom'ĕ-tĕr),
1. An instrument for measuring the density of a fluid. Synonym(s): densimeter
2. An instrument for measuring, by virtue of relative turbidity, the growth of bacteria in broth; useful in microbiologic assay of nutrients and antibiotics, phage studies.
3. An instrument for measuring the density of components (for example, protein fractions) separated by electrophoresis or chromatography, using light absorption or reflection.
4. An electronic instrument for measuring the blackening of radiographic film by x-ray exposure; used for film sensitometry, bone densitometry, measurement of line spread function (microdensitometer).
5. An instrument for measuring the extent to which a material absorbs or reflects light.
[L. densitas, density, + G. metron, measure]

densitometer

(dĕn′sĭ-tŏm′ĭ-tər)
n.
1. An apparatus for measuring the optical density of a material, such as a photographic negative.

den′si·tom′e·try (-trē) n.

densitometer

[den′sitom′ətər]
Etymology: L, densus + Gk, metron, measure
a device that uses a photoelectric cell to detect differences in the intensity of light transmitted through a substance, such as x-ray film.

den·si·tom·e·ter

(dens'i-tom'ĕ-tĕr)
1. An instrument for measuring the density of a fluid.
Synonym(s): densimeter.
2. An instrument for measuring, by virtue of relative turbidity, the growth of bacteria in broth; useful in microbiologic assay of nutrients and antibiotics and phage studies.
3. An instrument for measuring the density of components (e.g., protein fractions) separated by electrophoresis or chromatography, using light absorption or reflection.
4. An electronic instrument for measuring the blackening of radiographic film by x-ray exposure; used for film densitometry, bone densitometry, measurement of line spread function (microdensitometer).
[L. densitas, density, + G. metron, measure]

den·si·tom·e·ter

(dens'i-tom'ĕ-tĕr)
1. An instrument for measuring the density of a fluid.
2. An instrument for measuring the growth of bacteria in broth.
3. An instrument for measuring the density of components separated by electrophoresis or chromatography, using light absorption or reflection.
4. An electronic instrument for measuring the blackening of radiographic film by x-ray exposure; used for film densitometry and bone densitometry.
[L. densitas, density, + G. metron, measure]

densitometer (den´sitom´ətur),

n an instrument for determining the degree of darkening of developed photographic or radiographic film, based on the use of a photoelectric cell to measure the light transmission through a given area of the film.

densimeter, densitometer

1. an instrument for determining density or specific gravity of a liquid.
2. an instrument used for measuring photographic transmission and/or reflection density.
References in periodicals archive ?
The clear background of the gels enables measuring the concentration of individual fractions by densitometric scanning.
The Chemigenius 2XE imager and GeneTools software (Syngene) were used for densitometric quantification of signals.
Sample application (2 [micro]l), electrophoresis (80 V, 30 min), staining (Fat Red 7B), drying, and densitometric scanning (525 nm) were performed automatically by the Helena TITAN GEL Lipoprotein Electrophoresis System (Helena Laboratories, Beaumont TX, USA).
The gene expression was shown as ratio of densitometric value of target mRNA to that of gapdh.
For monitoring the toner layer the densitometric methods are used (inking density, screen value, screen dot size, reflectance) while for the inking quality of the solid tones the spectrophotometric methods are used (tonal value CIEL*a*b*, chromatic value C, hue angle H and the inking difference [DELTA]E).
The culture-independent samples were observed to have fewer bands overall and generally lower optical densities from the densitometric curves.
Densitometric analysis of AGE production after Dot-Blot immunodentection *p less than 0.
The densitometric results are confirmed by the image analysis.
The prevalence of densitometric osteopenia markedly increases with advancing age, and at any given bone density, age has a "profound impact" on the risk of fracture, he said (J.
Analysis of the protease activity of culture supernatants was performed by densitometric scanning of the 20-kDa band.