Milled rice can be graded according to United States Standards.
Rice type: milled rice
Number of US grades: 6 (US No. 1 to US No. 6)
Criteria for sample grade of milled rice - any of the following:
(1) does not meet the requirements for any of the U.S. grades (1 to 6)
(2) moisture > 15%
(3) musty, sour or heating
(4) objectionable foreign odor
(5) > 0.1% foreign material
(6) >= 2 dead or live weevils or other insect, insect webbing or refuse
(7) any other sign of low quality
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US No. 1 Criteria
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Findings
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total number of seeds, paddy kernels and heat damaged kernels per 500 grams
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<= 2
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heat damaged kernels and objectionable seeds per 500 grams
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<= 1
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percent red rice and damaged kernels
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<= 0.5%
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percent chalky kernels
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<= 1% for long grain; <= 2% for medium or short grain
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percent broken kernels
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<= 4%
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percent whole and broken kernels
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<= 1%
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color requirements
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white or creamy
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milling requirements
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well milled
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