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| TEST |
| 1. Assay 99.5% min. |
| 2. pH (1M in water @20 deg.C) 5.0-7.0 |
| 3. Insoluble matter 0.005% |
| 4. Chloride (Cl) 0.0005% |
| 5. Sulfate (SO4) 0.001% |
| 6. Absorbance cut off @ 333nm (1M in H2O) |
| As 0.1 ppm | Ba 10 ppm | Bi 10 ppm |
| Ca 500 ppm | Cd 5 ppm | Co 5 ppm |
| Cr 5 ppm | Cu 5 ppm | Fe 2 ppm |
| K 100 ppm | Li 5 ppm | Mn 5 ppm |
| Mo 5 ppm | Na 100 ppm | Ni 5 ppm |
| Pb 5 ppm | Sr 10 ppm | Zn 5 ppm |