EPA Method 508 - Performance Check Solution

Vanillin, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 121-33-5

Chlorimuron-ethyl, 10.0 µg/ml, Acetonitrile, 10m

Bis(2-ethylhexyl)-3,4,6-tribromo phthalate,50 µg/mL ,toluene,1mL,