KOMEX uses the East African Grading Standards for Grains. The standards specify the requirements, sampling, and testing methods for Grains traded on KOMEX.
3 Grading Standards for Dry Beans:
The specific requirements for dry common beans (Phaseolus vulgaris Linn), intended for human consumption, are:
| Characteristics |
Maximum limits | Method of test | ||
| Grade 1 | Grade 2 | Grade 3 | ||
| Foreign matter, % m/m | 0.5 | 0.75 | 1 | ISO 605 |
| Inorganic matter, % m/m | 0.1 | 0.2 | 0.3 | |
| Other edible grains, % m/m | 0.1 | 0.2 | 0.5 | |
| Pest damaged grains, % m/m | 1 | 2 | 3 | |
| Heat Damaged grains, % m/m | 0.1 | 0.2 | 0.5 | |
| Contrasting varieties %m/m | 0.5 | 1 | 1.5 | |
| Broken/split % m/m | 1 | 2 | 3 | |
| Discoloured %m/m | 1 | 1 | 1 | |
| Total Defectives Grains, % m/m | 2 | 3.5 | 5.5 | |
| Filth, % m/m | 0.1 | 0.1 | 0.1 | |
| Moisture, % m/m | 13.0 | 13.0 | 13.0 | ISO 24557 |
| Total Aflatoxin (AFB1+AFB2+AFG1+AFG2)), ppb max | 10 | ISO 16050 | ||
| Aflatoxin B1 only, ppb max | 5 | |||
| Fumonisin ppm max | 2 | |||
Note:
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- Sampling shall be done in accordance with the EAS 79/ISO 13690.
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Click on the link to download a comprehensive copy of The East African Grading Standards for Dry Beans