
1) Fluorimeter 
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https://www.crosswordclues.com/clue/fluorometer

1) Laboratory equipment 
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https://www.crosswordclues.com/clue/fluorometer

 A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. These parameters are used to identify the presence and the amount of specific molecules in a medium. Modern fluorometers are capable of detecting fluore...
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http://en.wikipedia.org/wiki/Fluorometer

(from the article `analysis`) ...is usually placed perpendicular to the path of the incident radiation in order to eliminate the possibility of monitoring the incident radiation. ...
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http://www.britannica.com/eb/a-z/f/40

<apparatus> A device used to measure the amount of fluorescence released by a sample that is exposed to a single wavelength of light or other electromagnetic radiation. ... (09 Oct 1997) ... 
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http://www.encyclo.co.uk/local/20973

(fldbobr-rom´ә-tәr) the instrument used in fluorometry, consisting of an energy source to induce fluorescence (such as a mercury arc lamp or xenon lamp), filters or monochromators for selection of the wavelength, and a detector.
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http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: flōr-om′ĕ-tĕr Definitions: 1. A device employing an ultraviolet source, monochromators for selection of wavelength, and a detector of visible light; used in fluorometry.
Found on 
http://www.medilexicon.com/medicaldictionary.php?t=34168

an instrument for measuring fluorescence, often as a means of determining the nature of the substance emitting the fluorescence.
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https://www.infoplease.com/dictionary/fluorometer
  No exact match found.