EPA Method 500 Series Internal Standard

Dimethyltin dichloride,neat,neat,100mg,

Isoproturon-desmethyl, 100 µg/ml, Acetonitrile, 1ml

alphaßß (20S,24RS)-24-Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.