56 / 172
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
which may decrease the final reading.
ER 4
Yes
ER 5
Yes
ER 6
Yes
ER 7
Yes
ER 8
Yes
ER 9
Yes
ER 10
Yes
Is sufficient information included for system suitability determination and product performance or acceptance
testing?
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
Are the conclusions statements valid based upon data presented?
ER 1
Yes
ER 2
Yes
ER 3
No, Not suitable for nutrients/metals that are increased in availability under alkali conditions or
ones that may complex with other fertilizer constituents during extractant wait time.
ER 4
Yes
ER 5
Yes
ER 6
Yes
ER 7
Yes
ER 8
Yes
ER 9
Yes
ER 10
Yes
Do you agree that the evidence or data from this and previous studies support the proposed applicability
statement?
ER 1
Yes
ER 2
Yes
ER 3
No, In addition to the items mentioned in #1 above, the purpose of a fertilizer test should be to
determine the availability of any given metal/nutrient for plant uptake once applied to the soil.
This method provides no such proof of it correlating in any way with plant uptake. Also, the
Page
2
of
14