EPA Method 507/1656 Nitrogen Phosphorus

5-Amino-1-naphthol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 83-55-6

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

1-Chloro-4-fluorobenzene, Internal standard for Gasoline Range Analysis, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 352-33-0