Subject : Rice Standards
B.E. 2540
| Standards for Parboiled rice | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grades | Grain Classification (%) | Size of Head rice (parts) | Size of Brokens (parts) | Grain Composition (%) | Rice and matter that may be present, not exceeding (%) | Millng degree | ||||||||||||||
| Long grain | Short grain (< 6.2 mm.) | Whole Kernels | Head rice | Brokens & Small brokens C1 | Red and or Undermilled kernels | Yellow Kernels | Black Kernels | Partly black and Peck kernels | Damaged Kernels | Glutinous rice | Undeveloped, Immature kernels,Other seeds and Foreign,matter,singly or combined | Paddy (Grains per 1 kg.) | ||||||||
| Class 1+2 (< 6.6 mm., 7.0 mm.) | Class 3 (< 6.2 - 6.6 mm.) | Total (including Brokens not passing through sieve No. 7 and C1) | Brokens not reaching the min. specified parts & not passing through sieve No.7 | Small brokens C1 | Total | Partly black kernels | ||||||||||||||
| 100% Sorted | >60 | - | <10 | >8 | >5.0- <8 | >80 | - | <4 | <0.5 | <0.1 | 0.5 | 0.25 | 0.1 | 1.5 | 0.5 | 1 | 1.5 | 0.2 | 3 | Extra well milled |
| 100% | >60 | - | <10 | >8 | >5.0- <8 | >80 | - | <4 | <0.5 | <0.1 | 0.5 | 0.5 | 0.25 | 2.5 | 1 | 1 | 1.5 | 0.2 | 5 | Extra well milled |
| 5% Sorted | >45 | - | <20 | >7.5 | >3.5- <7.5 | >80 | - | <7 | <0.5 | <0.1 | 1 | 0.5 | 0.15 | 2 | 0.75 | 1 | 1.5 | 0.2 | 5 | Well milled |
| 5% | >45 | - | <20 | >7.5 | >3.5- <7.5 | >80 | - | <7 | <0.5 | <0.1 | 1 | 1 | 0.25 | 3 | 1.5 | 1 | 1.5 | 0.2 | 10 | Well milled |
| 10% Sorted | >30 | - | <20 | >7 | >3.5- <7 | >75 | - | <12 | <0.7 | <0.3 | 2 | 0.75 | 0.2 | 2.5 | 1 | 1.5 | 1.5 | 0.4 | 5 | Well milled |
| 10% | >30 | - | <20 | >7 | >3.5- <7 | >75 | - | <12 | <0.7 | <0.3 | 2 | 1.5 | 0.25 | 3.5 | 2 | 1.5 | 1.5 | 0.4 | 10 | Well milled |
| 15% | >25 | - | <30 | >6.5 | >3.0- <6.5 | >70 | - | <18 | <1 | <1 | 5 | 2 | 0.5 | 4 | 2.5 | 1.5 | 2.5 | 0.7 | 10 | Reasonably well milled |
| 25% | >20 | - | <30 | >5 | <5.0 | >60 | - | <28 | - | <2 | 7 | 3 | 0.75 | 4.5 | 3 | 1.5 | 2.5 | 1 | 10 | Ordinarily milled |
| < less than | < equal or less than |
| > more than | > equal or more than |
| 0 = NIL | - not specified |
| Standards for Cargo rice | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grades | Grain Classification (%) | Size of Head rice(parts) | Size of Brokens(parts) | Grain Composition (%) | Rice and matter that may be present, not exceeding (%) | ||||||||||
| Long grain | Short grain (< 6.2 mm.) | Whole Kernels | Head rice | Brokens | Red Kernels | Yellow Kernels | Chalky Kernels | Damaged Kernels | White glutinous rice | Undeveloped,Immature kernels,Other seeds and Foreign,matter,singly or combined | Paddy | ||||
| Class 1 (> 7.0 mm.) | Class 2 and or 3 (> 6.2 - 7.0 mm.) | ||||||||||||||
| 100% Grade A | >70 | - | <5 | >8 | >5.0- <8.0 | >80 | - | <4 | 1 | 0.5 | 3 | 0.5 | 1.5 | 3 | 0.5 |
| 100% Grade B | >55 | - | <6 | >8 | >5.0- <8.0 | >80 | - | <4.5 | 1.5 | 0.75 | 6 | 0.75 | 1.5 | 5 | 1 |
| 100% Grade C | >40 | - | <7 | >8 | >5.0- <8.0 | >80 | - | <5 | 2 | 0.75 | 6 | 0.75 | 1.5 | 5 | 1 |
| 5% | >30 | - | <10 | >7.5 | >3.5- <7.5 | >75 | - | <7 | 2 | 1 | 6 | 1 | 1.5 | 6 | 1 |
| 10% | >20 | - | <15 | >7 | >3.5- <7.0 | >70 | - | <12 | 2 | 1 | 7 | 1 | 1.5 | 7 | 2 |
| 15% | >10 | - | <35 | >6.5 | >3.0- <6.5 | >65 | - | <17 | 5 | 1 | 7 | 1.5 | 2.5 | 8 | 2 |
| < less than | < equal or less than |
| > more than | > equal or more than |
| 0 = NIL | - not specified |
