964 lines
80 KiB
Text
964 lines
80 KiB
Text
<!DOCTYPE html>
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<html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# ">
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<head>
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<h1 class="nist-page__title">Assignment of the Number of Equivalent Reference Fluorophores to Dyed Microspheres</h1>
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<div class="nist-field__label">Published</div>
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<div class="nist-field__item"><time datetime="2016-06-02T12:00:00Z">June 2, 2016</time>
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<h3 class="nist-field__label">Author(s)</h3>
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<div class="nist-field__item"><span class="nist-author">Adolfas Gaigalas</span>, <span class="nist-author">Lili Wang</span>, <span class="nist-author">Paul C. DeRose</span></div>
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<div class="text-with-summary">
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<h3>Abstract</h3>
|
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A procedure will be described to assign to each dyed microsphere a number called the Equivalent number of Reference Fluorophores (ERF). The ERF unit gives the number of reference fluorophores in solution which produce the same fluorescence signal as a single dyed microsphere. In the first step, fluorescence measurements were carried out on serial dilutions of a solution of reference fluorophores. The resulting fluorescence intensities and the corresponding concentrations were used to calibrate the response of the fluorimeter. The calibration consisted of a linear relation between the intensities and concentrations. In the second step the fluorescence intensity from a suspension of microspheres was measured in order to determine the equivalent concentration of reference fluorophores which gave the same fluorescence intensity as the suspension of microspheres. This was performed by utilizing the calibration obtained in the first step. In the third step, a flow cytometer and a light obscuration apparatus were used to measure the concentration of microspheres in the suspensions used for the fluorescence measurements. Both methods can measure the total microsphere concentration, however, flow cytometer enables the measurement of the concentration of the major singlet microsphere population which is used for the calibration of the fluorescence scale of a flow cytometer. The fourth step utilized the data collected in steps one, two, and three to assign a value of ERF to individual microspheres. The set of microspheres with assigned ERF values will be used to establish a linear fluorescence scale in each channel of a flow cytometer. The discussion will emphasize the estimate of uncertainties in each step of the assignment process.
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<div class="nist-field__item">Journal of Research (NIST JRES) -</div>
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<div class="nist-field__label">Volume</div>
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<div class="nist-field__item">121</div>
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<div class="nist-field__item"><a href="/nist-pub-series/journal-research-nist-jres" hreflang="en">Journal of Research (NIST JRES)</a></div>
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<h3 class="nist-field__label">Keywords</h3>
|
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<div class="nist-field__item">ERF, flow cytometer, calibration, microspheres, concentration, fluorescence</div>
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<article class="bibcite-reference">
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|
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Gaigalas, A.
|
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, Wang, L.
|
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and DeRose, P.
|
||
|
||
(2016),
|
||
Assignment of the Number of Equivalent Reference Fluorophores to Dyed Microspheres, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.121.012
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(Accessed March 4, 2025)
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If you have any questions about this publication or are having problems accessing it, please contact <a href="mailto:reflib@nist.gov" class="usa-link">reflib@nist.gov</a>.
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Created June 2, 2016, Updated November 14, 2018
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