Stock Standard #4

Fichtelite, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2221-95-6

1,2,7,8-Tetrachloronaphthalene, 1.2mL x 50ug/mL, nonane

Tributylacetylcitrate,1000 µg/mL,isooctane,1mL,