Wheat Specification

S/N Characteristic Grade Method of test
1 2 3 4
i) Varietal restriction Approved varieties only  
ii) Moisture, (%) m/m, max 14 ISO 711/ ISO 712
iii) Standard of quality Minimum test weight kg/hl (g/0.5 L) 79(395) 75(375) 70(350) 65(325) ISO 7971-1

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iv) Protein, (%) m/m, min.

N × 5.7 at 11 % Moisture basis

Hard/strong white 13.0 12.0 11.5 10.0 ISO 20483
Soft white 10.0
v) Foreign matter % m/m, max. Total 0.40 0.70 1.30 2.40 ISO 605
vi) Un-millable material above the screen %, m/m, max. 0.60  

ISO 5223

vii) Screenings, % m/m, max. 5.0 5.0 5.0 0.60
viii) Falling number, s, min. 350 300 300 300 ISO 3093
ix) Edible grains other than wheat (whole or identifiably broken), %, m/m, max. 0.50 1.50 2.0 3.0 ISO 7970
x) Wheat of other classes or varieties % by m/m, max. Contrasting classes 1.0 2.0 3.0 5.0  

 

 

 

 

ISO 605

Total 3.0 3.0 5.0 5.0
xi) Defective grains, % by count, 300 grain sample, unless otherwise stated, max. Total defective 3.0 5.0 10.0 15.0
xii) Bulk density kg/hl, min. 70 ISO 7971-1

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xiii) Total Aflatoxin (AFB1+AFB2+AFG1 +AFG2)), ppb, max. 10 ISO16050
xiv) Aflatoxin B1, ppb, max. 5
xv) Fumonisin ppm, max. 2 AOAC 2001.04
NOTE 1       Grade 4 to be for only Partner States’ domestic use.

 

NOTE 2       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