Division 8 Results of a collaborative study
United Kingdom
An EC collaborative study was arranged in which four piglet feed samples including one blank feed were analysed by up to 13 laboratories. The results are given below:
| Sample 1 | Sample 2 | Sample 3 | Sample 4 | |
|---|---|---|---|---|
| L | 13 | 10 | 11 | 11 |
| n | 40 | 40 | 44 | 44 |
| mean [mg/kg] | — | 14,6 | 48,0 | 95,4 |
| Sr [mg/kg] | — | 0,82 | 2,05 | 6,36 |
| SR [mg/kg] | — | 1,62 | 4,28 | 8,42 |
| CVr [%] | — | 5,6 | 4,3 | 6,7 |
| CVR [%] | — | 11,1 | 8,9 | 8,8 |
| Nominal content | ||||
| [mg/kg] | — | 15 | 50 | 100 |
| recovery % | — | 97,3 | 96,0 | 95,4 |
L
number of laboratories
number of single values
standard deviation of repeatability
standard deviation of reproducibility
coefficient of variation of repeatability
coefficient of variation of reproducibility.