18. The number of seeds from other plant species in a sample of 1000g must not exceed the following.
| Category of seed sampled | All other plant species (including species specified in columns 3 to 6) | Other cereal species | All plant species other than cereals | Wild oats or darnel | Wild radish, corn cockle, sterile brome or couch |
|---|---|---|---|---|---|
(a) Only in respect of wild radish and corn cockle. | |||||
| Basic seed | 1 | 0 | 1 | 0 | 0(a) |
| C1 | 2 | 1 | 1 | 0 | 1 |
| C2 | 4 | 3 | 2 | 0 | 1 |