2,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml

EPA Method 8250 - Acid Matrix Spiking Solution

d3(ringA) Isoadiantane; ca. 20% d2, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Ammonia as (NH4+)