4.Pathogens in an organic fertiliser must not exceed the limits set out in the following table:U.K.
| Micro-organisms to be tested | Sampling plans | Limit | ||
|---|---|---|---|---|
| n | c | m | M | |
| Salmonella spp. | 5 | 0 | 0 | Absence in 25 g or 25 ml |
| Escherichia coli or Enterococcaceae | 5 | 5 | 0 | 1 000 in 1 g or 1 ml |
Where:
n
=
number of samples to be tested,
c
=
number of samples where the number of bacteria expressed in colony forming units (CFU) is between m and M,
m
=
threshold value for the number of bacteria expressed in CFU that is considered satisfactory,
M
=
maximum value of the number of bacteria expressed in CFU.