Maize Specification

S/N Characteristics Maximum limits Method of test
Grade1 Grade2 Grade3
i) Foreign matter, %m/m 0.5 1.0 1.5  

 

 

 

ISO605

ii) Inorganic matter, %m/m 0.25 0.5 0.75
iii) Broken kernels, %m/m 2.0 4.0 6.0
iv) Pest damaged grains, %m/m 1.0 3.0 5.0
v) Rotten and diseased grains, %m/m 2.0 4.0 5.0
vi) Discolored grains, %m/m 0.5 1.0 1.5
vii) Moisture, %m/m 13.5 ISO711/712
viii) Immature/shrivelled grains, %m/m 1.0 2.0 3.0  

ISO605

ix) Filth, %m/m 0.1
x) Total defective grains, %m/m 3.2 7.0 8.5 ISO605
xi) Total aflatoxin (AFB1+AFB2+AFG1 +AFG2),ppb 10  

ISO16050

xii) Aflatoxin B1,ppb 5
xiii)  

Fumonisin,ppm

 

2

AOAC 2001.04
NOTE          The parameter, Total defective grains is not the sum total of the individual defects. It is limited to 70% of the sum total of individual defects.

Source EAC Standards subject for review