Reference solution
| Column | Ultisil®XB-C18（4.6×250mm，5μm) |
| Mobile Phase | 0.05mol/l diammonium hydrogen phosphate solution (adjust pH value to 4.5 with phosphoric acid) / acetonitrile = 70 / 30 |
| Detection | 225nm |
| Temperature | 35℃ |
| Flow Rate | 1.0ml/min |
| Injection Volume | 20ul |
| Note | / |
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