Sn @ 10000 µg/mL in 5% HNO3, tr. HF, 100ml

6,6'-Dihydroxy-5,5'-dimethoxybiphenyl-3,3'-dicarbo

CONOSTAN Standard S-21+K, 500 ppm, 100g

Zn, 1000 µg/mL in 5% HNO3, 100ml