EPA Method 549.1 Analytes

Methamidophos, 100 µg/ml, Ethyl acetate, 5ml

2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid hydrate (contains 5-10% isopropyl alcohol), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 4065-45-6

cis-1,2-Dichloroethene, 100mg