Methods for microbiological examination of food and animal feeding stuffs -- Enumeration of micro-organisms. Colony count at 30°C (surface plate technique)
This Part of BS 5763 describes a general reference method for the enumeration of micro-organisms present in products intended for human consumption or feeding of animals, by counting the colonies growing on a solid medium after incubating aerobically at 30 °C.
A limitation on the applicability of this standard is imposed by the susceptibility of the method to a large degree of variability.
A note at the end of clause 10 gives information that takes account of this and assists in the interpretation of the results.
General technique for growing micro-organisms on the surface of an agar plate and calculating the result by a method giving good precision.
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