Division 3.2 Determination of the water activity (aw)
United Kingdom
The determination of the water activity (aw) of the sample shall be performed according to EN ISO 21807:2004 ‘Microbiology of food and animal feeding stuffs — Determination of water activity’.
The analysis must be carried out on the sample tested on the arrival at the laboratory. The method shall be able of operating in the range 0,999 to 0,9000 and the repeatability limit shall correspond to a standard deviation of 0,002.
The reported value should contain at least two significant figures.