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A Microbiological Quality Control Procedure Based on Tube Counts
Author(s) -
ASPINALL L J.,
KILSBY D. C.
Publication year - 1979
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1979.tb00827.x
Subject(s) - range (aeronautics) , quality (philosophy) , statistics , tube (container) , mathematics , control (management) , probability density function , computer science , materials science , engineering , physics , artificial intelligence , mechanical engineering , quantum mechanics , composite material
A microbiological quality control procedure requiring 9 tubes is described. It is designed so that (1) the probability of rejection exceeds 0·95 when the density of the organisms exceeds a specified critical level, (2) the probability of acceptance exceeds 0·95 when the density of the organisms is less than one‐fifth of this critical level, and (3) estimation of density is adequate over a reasonable range beneath this critical level.