<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="ru">
    <front>
        <journal-meta>
            <journal-id journal-id-type="publisher-id">Almanac of Modern Metrology</journal-id>
            <journal-title-group>
                <journal-title xml:lang="ru">Альманах современной метрологии</journal-title>
                <trans-title-group xml:lang="en">
                    <trans-title>Almanac of Modern Metrology</trans-title>
                </trans-title-group>
            </journal-title-group>
            <issn publication-format="print">2313-8068</issn>
        </journal-meta>
        <article-meta>
            <article-id pub-id-type="edn">SMEIMG</article-id>
<article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
    <subject>Methods and instruments for monitoring and diagnostics of materials, products, substances and the natural environment</subject>
</subj-group>
<subj-group subj-group-type="toc-heading" xml:lang="ru">
    <subject>Методы и приборы контроля и диагностики материалов, изделий, веществ и природной среды</subject>
</subj-group>
<subj-group subj-group-type="article-type">
    <subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group>
    <article-title>Разработка методики измерений счётной концентрации клеток в жидкости</article-title>
    <trans-title-group xml:lang="en">
        <trans-title>Development of a method for measuring cell number concentration in liquid</trans-title>
    </trans-title-group>
</title-group>
<contrib-group>
    <contrib contrib-type="author">
    	<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6076-4569</contrib-id>
<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Кулябина</surname>
		    <given-names>Елена Валериевна</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Kulyabina</surname>
		    <given-names>Elena V.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">ElenaVK@rostest.ru, kuliabina@mail.ru</email>
    <xref ref-type="aff" rid="aff1" />
	</contrib>     	
  <contrib contrib-type="author">
    	<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0580-1352</contrib-id>
<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Мелкова</surname>
		    <given-names>Ольга Николаевна</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Melkova</surname>
		    <given-names>Olga N.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">OlgaNM@rostest.ru</email>
    <xref ref-type="aff" rid="aff1" />
	</contrib>     	
  <contrib contrib-type="author">
    	<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3923-5571</contrib-id>
<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Кулябина</surname>
		    <given-names>Татьяна Валериевна</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Kulyabina</surname>
		    <given-names>Tatiana V.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">TatyanaVK@rostest.ru</email>
    <xref ref-type="aff" rid="aff1" />
	</contrib>     	
  <contrib contrib-type="author">
    	<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Дорман</surname>
		    <given-names>Мария Вячеславовна</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Dorman</surname>
		    <given-names>Maria V.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">MariyaVD@rostest.ru</email>
    <xref ref-type="aff" rid="aff1" />
	</contrib>     	
  <contrib contrib-type="author">
    	<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5026-9361</contrib-id>
<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Булыгин</surname>
		    <given-names>Федор Владиленович</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Bulygin</surname>
		    <given-names>Fedor V.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">FedorVB@rostest.ru</email>
    <xref ref-type="aff" rid="aff1" />
	</contrib>     	
  <contrib contrib-type="author">
    	<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Кирилюк</surname>
		    <given-names>Александр Анатольевич</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Kirilyuk</surname>
		    <given-names>Alexander A.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">AleksandrAK@rostest.ru</email>
    <xref ref-type="aff" rid="aff1" />
	</contrib><contrib contrib-type="author">
    	<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1251-5872</contrib-id>
<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Морозова</surname>
		    <given-names>Валерия Витальевна</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Morozova</surname>
		    <given-names>Valeriia V.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">lerapuri@gmail.com</email>
    <xref ref-type="aff" rid="aff2" />
	</contrib><contrib contrib-type="author">
    	<contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-8728-1039</contrib-id>
<name-alternatives>    
		<name xml:lang="ru">
		    <surname>Морозов</surname>
		    <given-names>Виталий Юрьевич</given-names>
		</name>
		<name xml:lang="en">
		    <surname>Morozov</surname>
		    <given-names>Vitaliy Yu.</given-names>
		</name>
</name-alternatives>
<email xlink:type="simple">rexttd@mail.ru</email>
    <xref ref-type="aff" rid="aff3" />
	</contrib>
</contrib-group>
	<aff-alternatives id="aff1">
    <aff>
        <institution xml:lang="ru">ФБУ «Научно-исследовательский центр прикладной метрологии — Ростест»</institution>
    </aff>	
    <aff>
        <institution xml:lang="en">FSBI “Research Center for Applied Metrology — Rostest”</institution>
    </aff>
</aff-alternatives><aff-alternatives id="aff1">
    <aff>
        <institution xml:lang="ru">Калифорнийский государственный университет</institution>
    </aff>	
    <aff>
        <institution xml:lang="en">California State University</institution>
    </aff>
</aff-alternatives><aff-alternatives id="aff1">
    <aff>
        <institution xml:lang="ru">Независимый эксперт</institution>
    </aff>	
    <aff>
        <institution xml:lang="en">Independent expert</institution>
    </aff>
</aff-alternatives>
<content-language>ru</content-language>
    <pub-date date-type="pub" iso-8601-date="2026-06-30" publication-format="print">
    <day>30</day>
    <month>06</month>
    <year>2026</year>
</pub-date>
<pub-date date-type="collection">
    <year>2026</year>
</pub-date>
<issue>2(46)</issue>
<issue-title xml:lang="ru" />
<fpage>135</fpage>
<lpage>148</lpage>
<history>
    <date date-type="received" iso-8601-date="2026-03-16">
        <day>16</day>
        <month>03</month>
        <year>2026</year>
    </date>
    <date date-type="accepted" iso-8601-date="2026-04-14">
        <day>14</day>
        <month>04</month>
        <year>2026</year>
    </date>
</history>
<permissions>
    
    <copyright-statement xml:lang="en">Copyright ©; Кулябина Е.В., Мелкова О.Н., Кулябина Т.В., Дорман М.В., Булыгин Ф.В., Кирилюк А.А., Морозова В.В., Морозов В.Ю., 2026</copyright-statement>
    <copyright-statement xml:lang="ru">Copyright ©; Кулябина Е.В., Мелкова О.Н., Кулябина Т.В., Дорман М.В., Булыгин Ф.В., Кирилюк А.А., Морозова В.В., Морозов В.Ю., 2026</copyright-statement>
    <copyright-year>2026</copyright-year>
    <copyright-holder xml:lang="en">Кулябина Е.В., Мелкова О.Н., Кулябина Т.В., Дорман М.В., Булыгин Ф.В., Кирилюк А.А., Морозова В.В., Морозов В.Ю.</copyright-holder>
    <copyright-holder xml:lang="ru">Кулябина Е.В., Мелкова О.Н., Кулябина Т.В., Дорман М.В., Булыгин Ф.В., Кирилюк А.А., Морозова В.В., Морозов В.Ю.</copyright-holder>
    <ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" />
    <license>
        <ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref>
    </license>
</permissions>
<self-uri xlink:href="https://asm.vniiftri.ru/stati/razrabotka-metodiki-izmerenij-schyotnoj-koncentracii-kletok-v-zhidkosti">https://asm.vniiftri.ru/stati/razrabotka-metodiki-izmerenij-schyotnoj-koncentracii-kletok-v-zhidkosti</self-uri>
<abstract>
    Статья посвящена разработке методики измерений счётной концентрации клеток в жидкости, предназначенной для определения количества живых микроорганизмов, таких как бактерии Bifidobacterium, Lactobacillus acidophilus, Listeria monocytogenes, Cronobacter sakazakii, Clostridium perfringens, Staphylococcus aureus, Proteus, Enterococcus, бактерии группы кишечных палочек (колиформы), бактерии Vibrio parahaemolyticus, Bacillus cereus в жидкости. В методике реализованы два основных метода измерений — метод мерного высева на чашке Петри и метод прямого подсчёта с использованием инвертированного люминесцентного микроскопа. Описаны условия и операции, обеспечивающие точность измерений, область применения методики, новые подходы, позволившие разработать методику с наилучшими на сегодняшний день значениями точности измерений указанными методами.
Установленный диапазон измерений счётной концентрации клеток варьируется от 1 до 1· 105 1/см3, что позволяет применять методику к различным образцам, включая как сильно разбавленные, так и концентрированные растворы.
В области применения методики входят здравоохранение, ветеринария, пищевая промышленность, что делает методику важным инструментом для контроля качества проводимых лабораторных анализов и оценки безопасности продуктов питания. Разработанная методика может служить основой для создания стандартных образцов счётной концентрации клеток, что будет способствовать стандартизации процессов измерений и повышению доверия к результатам анализов со стороны потребителей и регуляторных органов.    
</abstract>
<trans-abstract xml:lang="en">
    This article is devoted to the development of a measurement procedure of the cell number concentration in liquids. This procedure is intended to determine the number of viable microorganisms, such as Bifidobacterium, Lactobacillus acidophilus, Listeria monocytogenes, Cronobacter sakazakii, Clostridium perfringens, Staphylococcus aureus, Proteus, Enterococcus, coliforms, Vibrio parahaemolyticus, and Bacillus cereus, in liquids. This methodology implements two main measurement methods: the Petri dish method and direct counting using an inverted fluorescence microscope. It describes the conditions and procedures that ensure measurement accuracy, the scope of the methodology, and the new approaches that enabled the development of a methodology with the best measurement accuracy available for these methods.
The established measurement range for cell number concentration varies from 1 to 1 · 105 1/cm3, allowing the methodology to be applied to a variety of samples, including both highly diluted and concentrated solutions.
The methodology’s application areas include healthcare, veterinary medicine, and the food industry, making it an important tool for quality control of laboratory analyses and food safety assessments. The developed methodology can serve as the basis for the creation of reference materials for cell number concentration, which will facilitate the standardization of measurement processes and increase confidence in the analysis results among consumers and regulatory authorities.
This article makes a significant contribution to the development of measurement methods in microbiology and can be useful for both scientific research and practical applications in various fields.</trans-abstract>
<kwd-group xml:lang="ru">
        <kwd>методика измерений счётной концентрации клеток в жидкости</kwd>
        <kwd>метод мерного высева</kwd>
        <kwd>метод прямого подсчёта с применением инвертированного люминесцентного микроскопа</kwd>
    </kwd-group>
<kwd-group xml:lang="en">
        <kwd>liquid cell counting method</kwd>
        <kwd>volumetric seeding method</kwd>
        <kwd>direct counting method using an inverted fluorescence microscope</kwd>
    </kwd-group>
<funding-group>
    <funding-statement xml:lang="ru">Авторы заявляют об отсутствии сторонней финансовой поддержки при проведении исследования.</funding-statement>
<funding-statement xml:lang="en">The authors declare that they received no external financial support for this study.</funding-statement>	
</funding-group>
        </article-meta>
    </front>
    <body />
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        <fn-group>
            <fn fn-type="conflict">
    <p>The authors declare that they have no potential conflict of interest related to the research presented in this article.</p>
</fn>        	
        </fn-group>
    </back>
</article>