nephelometry$52114$ - definizione. Che cos'è nephelometry$52114$
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Cosa (chi) è nephelometry$52114$ - definizione

INSTRUMENT FOR MEASURING THE CONCENTRATION OF SUSPENDED PARTICULATES
Turbidimeter; Nephelos turbidity units; Turbidity meter; Nephelometry
  • Particulate contaminants (size in micrometers).
  • A nephelometer at the Kosan, [[Cheju Island]], South Korea NOAA facility
  • A nephelometer installation at [[Acadia National Park]]
  • Radiation balance (thickness of Earth's atmosphere is greatly exaggerated).
  • Turbidimeters used at a water purification plant to measure turbidity (in NTU) of raw water and clear water after filtration
  • 210px

Nephelometry (medicine)         
Nephelometry is a technique used in immunology to determine the levels of several blood plasma proteins. For example the total levels of antibodies isotypes or classes: Immunoglobulin M, Immunoglobulin G, and Immunoglobulin A.
Nephelometer         
·noun An instrument for measuring or registering the amount of cloudiness.
turbidimeter         
[?t?:b?'d?m?t?]
¦ noun an instrument for measuring the turbidity of a liquid suspension.
Derivatives
turbidimetric adjective
turbidimetry noun

Wikipedia

Nephelometer

A nephelometer or aerosol photometer is an instrument for measuring the concentration of suspended particulates in a liquid or gas colloid. A nephelometer measures suspended particulates by employing a light beam (source beam) and a light detector set to one side (often 90°) of the source beam. Particle density is then a function of the light reflected into the detector from the particles. To some extent, how much light reflects for a given density of particles is dependent upon properties of the particles such as their shape, color, and reflectivity. Nephelometers are calibrated to a known particulate, then use environmental factors (k-factors) to compensate lighter or darker colored dusts accordingly. K-factor is determined by the user by running the nephelometer next to an air sampling pump and comparing results. There are a wide variety of research-grade nephelometers on the market as well as open source varieties.