SPSFAM Heavy Metals ERP Book

AOAC FIRST ACTION 2015.01

MULTI LABORATORY TEST

SRM 1568b Rice Flour All thirteen participating laboratories reported results for SRM 1568b Rice Flour including the four Heavy Metal analytes, Arsenic, Cadmium, Mercury and Lead. The raw data, precision and trueness data are shown in the tables below. Arsenic: Lab 11 results were excluded from the precision determination for not meeting the SMPR recovery requirement of 60-115%. The 12 labs used for the precision determination reported a RSD(r) value of 5.48 and a RSD(R) value of 11.7. Both precision results meet the requirements of the SMPR. Cadmium: Lab 11 results were excluded from the precision determination for not meeting the SMPR recovery requirement of 60-115%. The 12 labs used for the precision determination reported a RSD(r) value of 9.10 and a RSD(R) value of 16.2. Both precision results meet the requirements of the SMPR. Mercury: Lab 6 and 8 results were excluded from the precision determination for not meeting the SMPR recovery requirement of 60-115%. Lab 2 and 10 were excluded for reporting < LOQ. The 9 labs used for the precision determination

P a g e 13 | 25