4,4'-DDT 13C12, 100µg/mL in Acetone, 1ml

EPA Method 1618 Organochlorine Mix C

Azinphos-methyl, 10.0 µg/ml, Ethyl acetate, 10ml

Silica (SiO2), 1000µg/ml in Water/0.5% NaOH, 100ml