Theobromine, 100µg/ml in MeOH, 5ml

EPA Method 1618 Organochlorine Mix C

Methidathion, 10 µg/ml, Ethyl acetate, 10ml

Atrazine-d5 (ethyl-d5), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 163165-75-1