AOAC RI ERP EBOOK FOR FERTILIZERS

AOAC RESEARCH INSTITUTE AOAC OFFICIAL METHODS OF ANALYSIS (OMA)

OMAMAN-28/AOAC 2006.03 Study Director: Sharon Webb, University of Kentucky, Division of Regulatory Services, 103 Regulatory Services Bldg, Lexington , Kentucky 40546-0275 At present, there are no safety concerns with the exception of the contemporary use of nitric and hydrochloridric acids. In addition, the use of microwave digestion units at 200 °C has to be carefully considered. I have not seen a review by the safety advisor. The safety checklist seems appropriate. I do not have any additional concerns regarding the safety of this method.

ER 8

ER 9

ER 10 No cautions provided Are there any concerns regarding the data manipulation, data tables, or statistical analysis? ER 1 No concerns ER 2 No ER 3 unknown, no access to this ER 4 No ER 5 none ER 6 no ER 7 No ER 8

At present, there are no concerns with relation to data manipulation, data tables and statistical analysis. I have not seen a review by the statistical advisor. However I do not have any concerns regarding the statistics used to support this method other than the use of a broader selection of materials (organic derivation) used in future work or data reviews.

ER 9

ER 10 None observed. EDITORIAL EVALUATION CRITERIA Is the Validation Study Manuscript in a format acceptable to AOAC? ER 1 Yes ER 2 Yes ER 3 Yes ER 4 Yes ER 5 Yes ER 6 Yes ER 7 Yes ER 8 Yes ER 9 Yes ER 10 Yes Is the method described in sufficient detail so that it is relatively easy to understand, including equations and procedures for calculation of results (are all terms explained)? ER 1 Yes ER 2 Yes ER 3 Yes ER 4 Yes ER 5 Yes Page 10 of 14