THAI RICE STANDARDS

NOTIFICATION OF MINISTRY OF COMMERCE

Subject : Rice Standards

B.E. 2540

Standards for White 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 Chalky Kernels Damaged Kernels White glutinous rice Undeveloped,Immature kernels, Other seeds and Foreign, matter,singly or combined Paddy (Grain sper 1 kg.)
Class 1 (<7.0 mm.) Class 2 (<6.6 - 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
100% Grade A >70 - <5 0 >8 >5.0 - <8.0 >60 - <4 0 0 0 0 3 0 1.5 0 5 Extra well milled
100% Grade B >40 - <5 >8 >5.0 - <8.0 >60 - <4.5 <0.5 <0.1 0 0.2 6 0.25 1.5 0.2 7 Extra well milled
100% Grade C >30 - <5 >8 >5.0 - <8.0 >60 - <5 <0.5 <0.1 0 0.2 6 0.25 1.5 0.2 7 Extra well milled
5% >20 - <10 >7.5 >3.5 - <7.5 >60 - <7 <0.5 <0.1 2 0.5 6 0.25 1.5 0.3 10 Well milled
10% >10 - <15 >7 >3.5 - <7.5 >55 - <12 <0.7 2 1 7 0.5 1.5 0.4 15 Well milled
15% >5 - <30 >6.5 >3.0 - <6.5 >55 - <17 <2 <0.5 5 1 7 1 2 0.4 15 Reasonably well milled
25% Super >50 <50 >5 <5.0 >40 - <28 - <1 5 1 7 1 2 1 15 Reasonably well milled
25% >50 <50 >5 <5.0 >40 - <28 - <2 7 1 8 2 2 2 20 Ordinarily milled*
35% >50 <50 >5 <5.0 >32 - <40 - <2 7 1 10 2 2 2 20 Ordinarily milled*
45% >50 <50 >5 <5.0 >28 - <50 - <3 7 1 10 2 2 2 20 Ordinarily milled*
 
*but not better than reasonably well milled
< less than < equal or less than
> more than > equal or more than
0 = NIL - not specified

Standards for White broken rice
Grades Obtainedfrom the milling of White rice Grain Composition (%) Rice and matter that may be present , not exceeding (%)
Whole kernels Whole Kernelsand Brokenshaving the lengthas from 6.5 partsonward, combined Brokens havingthe length as from 5 parts onward Brokens havingthe length notreaching 6.5 partsand not passingthrough Sieve No.7 Brokens havingthe length notreaching 5.0 partsand not passingthrough Sieve No.7 Small brokens C1 White glutionus rice Foreign matter
Total (including C1) Small brokens C1
A1 Extra Super 100% <15.0 - >74.0 - <10.0 <1.0 1.5 0.5 0.5
A1 Super 100%, 5%, 10% - <15.0 - >80.0 - <5.0 1.5 0.5 0.5
A1 Special 15%, 25% Super - <15.0 - >79.0 - <6.0 2.5 0.5 1.0
 
< less than < equal or less than
> more than > equal or more than
0 = NIL - not specified

Remarks :
- Fragrant rice purity not less than 92% and moisture not exceeding 14%
- Average length of whole kernels not less than 7 mm.
- Average content not less than 13% and not exceeding 18% at moisture content 14%

( Published in the Royal Gazette Vol. 114, Section 31 D. dated 17 April B.E. 2540 )