nephelometer

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neph·e·lom·e·ter

(nĕf′ə-lŏm′ĭ-tər)

An apparatus that is used to measure the size and concentration of particles in a liquid by analysis of light scattered by the liquid.

[Greek nephelē, cloud; see nebh- in Indo-European roots + -meter.]

neph′e·lo·met′ric (-lō-mĕt′rĭk) adj.

neph′e·lom′e·try n.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

nephelometer

(ˌnɛfɪˈlɒmɪtə)

(Chemistry) chem an instrument for measuring the size or density of particles suspended in a fluid

[C19 (in the sense: an instrument for measuring the cloudiness of the sky): from Greek nephelē cloud + -o- + -meter]

nephelometric adj

ˌnepheˈlometry n

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

neph•e•lom•e•ter

(ˌnɛf əˈlɒm ɪ tər)

n.

an instrument for studying the density of suspended particles in a liquid by measuring the degree to which the suspension scatters light.

[1880–85; nephel- (comb. form representing Greek nephélē cloud; see nebula) + -o- + -meter]

neph`e•lo•met′ric (-ləˈmɛ trɪk) neph`e•lo•met′ri•cal, adj.

neph`e•lo•met′ri•cal•ly, adv.

neph`e•lom′e•try, n.

References in periodicals archive ?

Light scattering by atmospheric aerosols at the FAN stations is measured using integrating nephelometers [currently, either the TSI (model 3563, TSI Inc.) or the Ecotech (Aurora 3000/4000, Ecotech) nephelometer].

OVERVIEW OF THE NOAA/ESRL FEDERATED AEROSOL NETWORK: The cooperative nature of NOAA's Federated Aerosol Network allows for collection of consistent datasets for evaluating regionally representative aerosol climatologies, trends, and radiative forcing at 30 sites around the world

Nephelometers are portable, cost less than reference method monitors, and can easily be deployed indoors.

NAAQS [PM.sub.2.5] or ISO 14644 As an IAQ Metric?

We deployed portable particulate matter monitors -- active-flow and passive personal DataRAM (pDR 1000AN and pDR-1200, Thermo Electron Corp., Franklin, MA) nephelometers -- which continuously measured PM[sub.2.5] and PM[sub.10] (particulate matter less than 10 μm in diameter), respectively.

Agricultural burning monitored for air pollutants in Imperial County; exposure reduction recommendations developed

Smoke particulate - as measured here by Lane Regional Air Protection Agency nephelometers - spiked locally on Monday, which was the same day Russian President Dmitry Medvedev declared a state of emergency in seven regions of Russia.

Russia's deadly blaze to blame for valley's haze

Some nephelometers, including the BN II, have automated detection algorithms designed to detect antigen excess.

Sharply increased serum free light-chain concentrations after treatment for multiple myeloma

Exposure assessment and modeling of particulate matter for asthmatic children using personal nephelometers. Atmos Environ.

Pulmonary effects of indoor- and outdoor-generated particles in children with asthma

Assayed values provided on a list of methods includes nephelometers and immunochemistry analyzers.

Immunology control. (Industry Update)

Nephelometers are available in lab or field-based versions, and they vary in terms of sample preparation requirements.

Market profile: nephelometers

The company offers nephelometers and absorptometers, the former being highly sensitive to low turbidities and the latter, termed the Falling Stream Turbidimeter, recommended for high turbidity ranges.

Process control instrumentation

Five measurement systems were used, for example, in Desert Research Institute's (DRI's), Reno, NV, analyses in the Denver Brown Cloud study: sightpath transmissometers (devices that measure sight-path extinction), integrating nephelometers for monitoring particle scattering, chemilumninescent nitrogen oxide analyzers, fine particulate sequential filter samplers, and micro-orifice deposit impactors.