Active Standard ASTM D7847 | Developed by Subcommittee: D02.14
Book of Standards Volume: 05.04
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.
1.2 This guide addresses the unique considerations than 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.
ICS Number Code 07.100.01 (Microbiology in general); 75.100 (Lubricants, industrial oils and related products)