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ASTM D7847-22
Standard Guide for Interlaboratory Studies for Microbiological Test Methods
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NORM herausgegeben am 1.7.2022
Informationen über die Norm:
Bezeichnung normen: ASTM D7847-22
Ausgabedatum normen: 1.7.2022
SKU: NS-1069996
Zahl der Seiten: 9
Gewicht ca.: 27 g (0.06 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Microbiology in generalLubricants, industrial oils and related products
Die Annotation des Normtextes ASTM D7847-22 :
Keywords:
bioburden, biodeterioration, biodiesel, biofuels, biomass, diesel, fuel, fuel-oil, fungi, gasoline, interlaboratory studies (ILS), microbial contamination, microbiology, microorganisms,, ICS Number Code 07.100.01 (Microbiology in general),75.100 (Lubricants, industrial oils and related products)
Ergänzende Informationen
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1.1?Microbiological test methods present challenges that are unique relative to chemical or physical parameters, because microbes proliferate, die off and continue to be metabolically active in samples after those samples have been drawn from their source. 1.1.1?Microbial activity depends on the presence of available water. Consequently, the detection and quantification of microbial contamination in fuels and lubricants is made more complicated by the general absence of available water from these fluids. 1.1.2?Detectability depends on the physiological state and taxonomic profile of microbes in samples. These two parameters are affected by various factors that are discussed in this guide, and contribute to microbial data variability. 1.2?This guide addresses the unique considerations that must be accounted for in the design and execution of interlaboratory studies intended to determine the precision of microbiological test methods designed to quantify microbial contamination in fuels, lubricants and similar low water-content (water activity <0.8) fluids. 1.3?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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