| Black Matpe (Fair Average Quality) | |
| Foreign Matters | 1.00 % Max |
| Weevilled Seeds | 1.50 % Max |
| Damaged Otherwise | 4.00 % Max |
| Brown Seeds | 3.00 % Max |
| Sister Beans | 3.00 % Max |
| Black Matpe (First Quality) | |
| Foreign Matters | 1.00 % Max |
| Weevilled Seeds | 1.00 % Max |
| Damaged Otherwise | 2.50 % Max |
| Brown Seeds | 3.00 % Max |
| Sister Beans | 3.00 % Max |
| Small Seeds | 6.00 % Max |
| (Passing through slotted sieve 2.75 mm) | |
| Big Seeds / Higher grade | 15.00 % Max |
| (retained 0n 3.25 mm sieve) | |
Chinese