| matrix | 2.5% HNO3 |
| Ce | 50 ± 0.5 mg/L |
| Dy | 50 ± 0.5 mg/L |
| Er | 50 ± 0.5 mg/L |
| Eu | 50 ± 0.5 mg/L |
| Gd | 50 ± 0.5 mg/L |
| Ho | 50 ± 0.5 mg/L |
| La | 50 ± 0.5 mg/L |
| Lu | 50 ± 0.5 mg/L |
| Nd | 50 ± 0.5 mg/L |
| Pr | 50 ± 0.5 mg/L |
| Sm | 50 ± 0.5 mg/L |
| Sc | 50 ± 0.5 mg/L |
| Tb | 50 ± 0.5 mg/L |
| Th | 50 ± 0.5 mg/L |
| Tm | 50 ± 0.5 mg/L |
| Y | 50 ± 0.5 mg/L |
| Yb | 50 ± 0.5 mg/L |
| other Standards |