D5-Propachlor OA, 100 µg/ml, Acetonitrile, 1ml

17a-Estradiol, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 57-91-0

CLP Surr. Standard #2, 200ug/mL in Acetone, 1ml

Nitrite (NO2-) as N