= Bacteriological Analytical Manual Chapter 3: Aerobic Plate Count by the Food and Drug Administration (January 2026)
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https://www.fda.gov/media/191248/download
Primary FDA PDF, cover January2026 Edition; authors p.3 Guodong Zhang, Martine Ferguson, Robert J.Blodgett(ret.). SectionD, Calculating and Recording Counts, pp.6–8; one-plate example2.2a p.7 and Recording counts p.8: concentration is colony count divided by original-sample equivalent volume; clump/spreader interpretation and zero-count reporting. Search-engine title still says May2025, but current PDF cover/revision history establishes January2026. No universal countable-range rule asserted.
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