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| NaH2PO2/Ni2SO4 | Phosphorous content | |||
|---|---|---|---|---|
| I (wt%) | II (wt%) | III (wt%) | Average (wt%) | |
| 3 : 1 | 3.89 | 4.17 | 4.10 | 4.05 |
| 5 : 1 | 8.30 | 7.94 | 8.01 | 8.08 |
| 9 : 1 | 12.16 | 11.99 | 12.25 | 12.13 |
| 13 : 1 | 15.97 | 16.13 | 16.08 | 16.06 |
| 22 : 1 | 20.01 | 19.88 | 20.21 | 20.03 |
