AOAC ERP Fertilizers - March 2019
3/14/2019
AOAC EXPERT REVIEW PANEL FOR MICROBIOLOGY FOR FOODS AND ENVIRONMENTAL SURFACES
EXPERT REVIEW PANEL FOR FERTILIZERS Comparability of apparatus types
5
Total Sulfur in Fertilizers 2017.08
AOAC EXPERT REVIEW PANEL FOR MICROBIOLOGY FOR FOODS AND ENVIRONMENTAL SURFACES
EXPERT REVIEW PANEL FOR FERTILIZERS Validation Materials ‐ Sulfur Determination by Combustion # Sample Approx S Range, % Source Reference
Comment
Consensus Material Consensus Material Consensus Material Consensus Material
MDL ‐ Method Blank (Urea)
1 160511
0 ‐ 1 %
Magruder
2 180311
0.5 ‐ 1.5%
Magruder
Liquid Organic
Prepared by Dr. James Bartos and the Office of Indiana State Chemist
3 2011‐05
1 ‐ 2%
Magruder
Poultry Litter Ash
4 2011‐08 5 K Sulfite 6 Ca Thio 7 2011‐07 8 Anuvia
6 ‐ 7% 7 ‐ 9% 9 ‐ 11% 9 ‐ 11% 19 ‐ 51%
Magruder
Blended Lawn Fertilizer
TKI TKI
Liquid Sulfite
Liquid Thiosulfate
Consensus Material
Magruder
5%SO4, 5% Elemental SO4 + Organic Common Solid Fertilizer/SO4 Common Solid Fertilizer/SO4 Liquid Thiosulfate
Anuvia
9 2016‐0276 21 ‐ 23%
OISC
KMAG
10 2016‐0667 23 ‐ 25%
OISC
AMS
11 NH4 Thio
25 ‐ 27%
TKI
ATS
12 Dri Sulfur 42 41 ‐ 43%
Monty's
Elemental S
Micronized Sulfur
Total Sulfur in Fertilizers 2017.08
6
13
90 ‐ 94%
Wilbur‐Ellis
Elemental S
3
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