The wholes are graded into different sizes on the basis of number of kernels per pound according to internationally accepted specification.
Grade | No. /lb | No./50 gm. |
W 180 | 170 - 180 | 18 - 20 |
W 210 | 200 - 210 | 22 - 23 |
W 240 | 220 - 240 | 24 - 26 |
W 280 | 260 - 280 | 28 - 31 |
W 320 | 300 - 320 | 33 - 35 |
W 400 | 350 - 400 | 38 - 44 |
W 450 | 400 - 450 | 45 - 50 |
W 500 | 450 - 500 | 50 - 55 |