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Interlaboratory study comparing two fuel microbiology standard test methods
- Passman, F.J., Kelley, J., Whalen, P.
- International biodeterioration & biodegradation 2019 v.141 pp. 17-23
- adenosine triphosphate, antigens, fuels, microbial contamination
- Two ASTM standard test methods for determining microbial contamination in fuels and fuel-associated water were compared in a joint interlaboratory study. One method measured cellular adenosine triphosphate (cATP) and the other detected specific microbial antigens. The latter was a lateral flow device (LFD). The results illustrate the degree of agreement between the two methods. Representatives of eight organizations tested a total of 144 fuel and fuel-associated water samples by each of the two methods. Raw data were converted into negligible, moderate, and heavy, attribute scores (1, 3 and 5, respectively). The two methods' attribute scores agreed for 122 of the 144 samples (83%). This degree of agreement is a very strong indicator that the two methods provided an accurate indication of microbial contamination.