Herbicide Free Acid Standard

Betulin, 600µg/mL, Solvent-diisopropyl ether, Unit 1mL, # of units-1, Cas.no. 473-98-3

EPA 8040 Surrogate Standard S-4241 2mg/mL each in isopropanol, 1 mL, 5 x 1mL, 5mL 2-Fluorophenol 2,4,6-Tribromophenol

Simazine, 10.0 µg/ml, Acetonitrile, 10ml