2013 ISPAM Mid-Year Mtg Book

ISO/TS 19036:2006/Amd.1:2009(E)

The test result may be reported according to one of the following possibilities:

(cfu/g)];

2,0 ± 0,3 [log 10

2,0 [log 10

(cfu/g)] [1,7; 2,3];

100 cfu/g [46; 220];

100 cfu/g [ − 54 %; + 120 %].

Applicable only if two formulae are used (see 8.2.2): C lim

= 144. Then, as Σ C = 11 < C lim

NOTE

= 144, simplified Equation (2) for

high counts cannot be used.

EXAMPLE 4 (applicable only if two formulae are used)

A standard deviation of reproducibility, s R

, of 0,22 [log 10

(cfu/g)] has been found.

C lim

= 36. Then, if Σ C > C lim

= 36, simplified Equation (2) for high counts, U = 2 × 0,22 = 0,44 applies.

A general rule, applicable only for results with Σ C > 36, may be stated according to one of the following possibilities:

(cfu/g)];

log result ± 0,44 [log 10

log result [log 10

(cfu/g)] [log result − 0,44; log result + 0,44];

result cfu/g [10 log result − 0,44 ; 10 log result + 0,44 ];

result cfu/g [ − 64 %; + 175 %].

If Σ C u 36, or if a single universally applicable equation is preferred, use Equation (1).”

Page 16 Add Annex B (overleaf) before the bibliography.

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