Name:EPA 8270D CLP Semi-Volatile Internal Standard, 6 components conc. 2000 ug/ml each comp. in Methylene chloride ml 1 Conc. µg/ml (PPM):2000 ug/ml Solvent:Methylene chloride Molecular Weight (g/mol):N.D. N. of components6 Components Notes:Replacement Ultra code ISM-560-1 or Supelco code 46955-U