CONOSTAN Standard S-21+K, 885 ppm, 200g

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

Cr, 1000 µg/mL in 5% HNO3, 100ml

Te, 1000 µg/mL in 5% HNO3, 100ml