- Mixing of 4 anions/fluorine/chlorine/nitrate/sulfate,322μg/mL, 1.85μg/mL, 27.6μg/mL, 306μg/mL, U=3%, matrix: H2O, 50ml
- Mixing of 4 anions/fluorine/chlorine/nitrate/sulfate,5μg/mL, 8μg/mL, 8μg/mL, 40μg/mL, U=3%, matrix: H2O, 50ml