ASTM D6974 - 16 - Standard Practice for Enumeration of Viable Bacteria and Fungi in Liquid Fuels. Filtration and Culture Procedures

ASTM D6974 - 16

Standard Practice for Enumeration of Viable Bacteria and Fungi in Liquid Fuels. Filtration and Culture Procedures

Status : Current   Published : July 2016

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1.1 This practice covers a membrane filter (MF) procedure for the detection and enumeration of Heterotrophic bacteria (HPC) and fungi in liquid fuels with kinematic viscosities 24 mm 2 · s -1 at ambient temperature.

1.2 This quantitative practice is drawn largely from IP Method 385 and Test Method D5259.

1.3 This test may be performed either in the field or in the laboratory.

1.4 The ability of individual microbes to form colonies on specific growth media depends on the taxonomy and physiological state of the microbes to be enumerated, the chemistry of the growth medium, and incubation conditions. Consequently, test results should not be interpreted as absolute values. Rather they should be used as part of a diagnostic or condition monitoring effort that includes other test parameters, in accordance with Guide D6469.

1.5 This practice offers alternative options for delivering fuel sample microbes to the filter membrane, volumes or dilutions filtered, growth media used to cultivate fuel-borne microbes, and incubation temperatures. This flexibility is offered to facilitate diagnostic efforts. When this practice is used as part of a condition monitoring program, a single procedure should be used consistently.

1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.7  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 and health practices and determine the applicability of regulatory limitations prior to use.




Standard NumberASTM D6974 - 16
TitleStandard Practice for Enumeration of Viable Bacteria and Fungi in Liquid Fuels. Filtration and Culture Procedures
StatusCurrent
Publication Date01 July 2016
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Bacteria, Biodegradation, Biodeterioration, Colony forming unit, Enumeration, Fuel microbiology, Fungi, Membrane filter technique
ICS75.160.20
PublisherASTM
FormatA4
DeliveryYes
Pages5
File Size97 KB
Price£40.00


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