EPA Method 353.2 Nitrate & Nitrite

D4-Ethephon-hydroxy, 100 µg/ml, Acetone, 1ml

cis-1,3,trans-1,5-1,3,5-Trimethylcyclohexane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 1795-26-2

Gadolinium (Gd)