Fenthion-sulfoxide, 100 µg/ml, Acetonitrile, 5ml

n-Octadecane-d38, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 16416-31-2

4-n-Pentylphenol-d16, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 1219805-40-9

QC for Chloride and Sulfate Anions