Initial Check Verif. Standard 4, in 4%HNO3, 100ml

Coumaphos-oxon, 10.0 µg/ml, Cyclohexane, 1ml

2,6-Dimethylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 581-42-0

2,3,4,6-Tetrachlorophenol, 10.0 µg/ml, Cyclohexan