| Pesticides | Fortification level | |||
| 0.02 mg/L | 0.1 mg/L | |||
| Mean (%) | RSD (%) | Mean (%) | RSD (%) | |
| Alpha BHC | 82 | 4 | 87 | 6 |
| Delta BHC | 85 | 7 | 81 | 9 |
| Beta BHC | 84 | 3 | 93 | 4 |
| Gama BHC | 117 | 5 | 116 | 7 |
| Heptachlor | 86 | 8 | 88 | 5 |
| Aldrin | 78 | 7 | 79 | 5 |
| Heptachlor Epoxide | 82 | 5 | 82 | 5 |
| Gama Chlordane | 80 | 6 | 87 | 9 |
| Alpha Chlordane | 81 | 3 | 89 | 8 |
| Alpha Endosulfan | 82 | 9 | 102 | 8 |
| 4,4 DDE | 83 | 8 | 84 | 6 |
| Dieldrin | 84 | 11 | 89 | 9 |
| Endrin | 86 | 7 | 89 | 12 |
| 4,4 DDD | 88 | 9 | 90 | 9 |
| Beta Endosulfan | 86 | 6 | 93 | 7 |
| 4,4 DDT | 86 | 5 | 87 | 4 |
| Endosulfan sulphate | 113 | 4 | 110 | 8 |
| Methoxychlor | 86 | 8 | 88 | 7 |
| Endrin ketone | 85 | 10 | 81 | 6 |
| Cypermethrin | 97 | 6 | 105 | 6 |
| Fenvalerate | 102 | 5 | 94 | 8 |