AOAC ERP Fertilizers - December 2017

AOAC RESEARCH INSTITUTE Expert Review Panel Chair Report for Fertilizers Page 4 of 4

Criteria for Vetting Experts and Selection Process: The original twenty-five (25) candidates are being submitted for consideration by the Official Methods Board to evaluate candidate methods for Fertilizers which include the subject matter areas of Metals, Nitrogen (slow release), Phosphorus & Potassium, Total Sulfur, and Urea as per the Expert Review Panel (ERP) Policies and Procedures. The candidates were highly recommended by the Agricultural Materials Community, the Association of American Feed and Control Officials (AAFCO), the Association of Fertilizer and Phosphate Chemists (AFPC) and other subject matter experts. Many of the following candidates have participated in various AOAC activities, including but limited to, Method Centric Committees that were formed under the legacy OMA pathway. The following members were present to review methods OMAMAN-22, OMAMAN-23, OMAMAN-24, and OMAMAN- 28.

OMAMAN-28 1. Bartos, James 2. Hall, William

OMAMAN-22 1. Bartos, James 2. Hall, William 3. Hartshorn, Jon 4. Hojjatie, Michael 5. Nacharaju, Krishnamurthy (Murthy) 6. Nagarajan, Rajamani 7. Parisi, Salvatore 8. Provance-Bowley, Mary

OMAMAN-23 1. Bartos, James 2. Hall, William 3. James, Barbara 4. Kariuki, Solomon 5. Parisi, Salvatore 6. Phillips, Heidi 7. Shelite, Kristopher 8. Tan, Rechel 9. Tsourides, Dion

OMAMAN-24 1. Bartos, James 2. Hall, William

3. Kariuki, Solomon 4. Parisi, Salvatore 5. Phillips, Heidi 6. Provance-Bowley, Mary 7. Reba, Rick 8. Shelite, Kristopher 9. Shoemaker, Dirk D 10. Tan, Rechel 11. Tsourides, Dion 12. Wegner, Keith

3. Kariuki, Solomon 4. Parisi, Salvatore 5. Phillips, Heidi 6. Provance-Bowley, Mary 7. Wegner, Keith

ERP Orientation: All ERP members have completed the mandatory AOAC Expert Review Panel Orientation Webinar.

Expert Review Panel Meeting Quorum The meeting of the Expert Review Panel was held in person. A quorum is the presence of seven (7) members or 2/3 of the total vetted ERP, whichever is greater. OMAMAN-22: Eight (8) out of the nine (9) members were present and therefore met a quorum to conduct the meeting. OMAMAN-23: Nine (9) out of the fourteen (14) members were present and therefore met a quorum to conduct the meeting. OMAMAN-24: Seven (7) out of the eight (8) members were present and therefore met a quorum to conduct the meeting. OMAMAN-28: Twelve (12) out of the fifteen (15) members were present and therefore met a quorum to conduct the meeting. Conclusion: The ERP adopted OMAMAN-22: Determination of Nitrogen, Phosphorus, Potassium and other nutrients release in Slow- and Controlled-Release Fertilizers, OMAMAN-23: Single Laboratory Validation of a Method for the Determination of Phosphorus and Potassium in Commercial Inorganic Fertilizers by ICP-OES, and OMAMAN-24: Determination of Total Sulfur in Fertilizers by High Temperature Combustion as AOAC First Action Official Methods by consensus. The decisions have been captured and reflected in the meeting minutes. Subsequent ERP Activities: ERP members are required to track the performance of the recently approved First Action method for a 2 year period effective as of September 28, 2015. Standard Method Performance Requirements (SMPRs): N/A